text1=Highest level of trust defined in the Orange Book (Department of Defense Trusted Computer System Evaluation Criteria DoD 5200.28-STD). NSTISSI 4009 &text2=Opportunity to make use of an IS resource. NSTISSI 4009 &text3=Limiting access to information system resources only to authorized users programs processes or other systems. NSTISSI 4009 &text4=Mechanism implementing discretionary and/or mandatory access control between subjects and objects. NSTISSI 4009 &text5=Security safegard designed to detect and deny unauthorized access and permit authorized access in an IS. NSTISSI 4009 &text6=Designated individual responsible for limiting access to information systems resources. NSTISSI 4009 &text7=Hierarchical portion of the security level used to identify the sensitivity of IS data and the clearance or authorization of users. Access level in conjunction with the non-hierarchical categories forms the sensitivity label of an object. See category. NSTISSI 4009 &text8=(IS) Compilation of users programs or processes and the access levels and types to which each is authorized. (COMSEC)-Roster of persons authorized admittance to a controlled area. NSTISSI 4009 &text9=Segment of time generally expressed in days or weeks during which access rights prevail. NSTISSI 4009 &text10=Associates each user with a list of protected objects the user may access. NSTISSI 4009 &text11=Privilege to perform action on an object. Read write execute append modify delete and create are examples of access types. NSTISSI 4009 &text12=Area within which the user is aware of all persons entering and leaving. This area denies the opportunity for concealed TEMPEST surveillance and delineates the closest point of potential TEMPEST intercept from a vehicle. Preferred term: inspectable space. NSTISSI 4009 &text13=(IS) Process allowing auditing of IS activities to be traced to a source that may then be held responsible. (COMSEC) Principle that an individual is entrusted to safeguard and control equipment keying material and information and is answerable to proper authority for the loss or misuse of that equipment or information. NSTISSI 4009 &text14=Numeric code used to indicate the minimum accounting controls required for items of accountable COMSEC material within the COMSEC Material Control System. NSTISSI 4009 &text15=Number assigned to an item of COMSEC material to facilitate its control. NSTISSI 4009 &text16=Formal declaration by a Designated Approving Authority (DAA) that an IS is approved to operate in a particular security mode using a prescribed set of safeguards at an acceptable level of risk. NSTISSI 4009 &text17=Product comprised of a System Security Plan (SSP) and a report documenting the basis for the accreditation decision. NSTISSI 4009 &text18=Synonymous with Designated Approving Authority. NSTISSI 4009 &text19=Access Control List &text20=Access Control Officer &text21=Incorporation of new hardware software or firmware safeguards in an operational IS. NSTISSI 4009 &text22=Type of attack in which the attacker steals a legitimate network address of a system and uses it to impersonate the system that owns the address. Impersonating masquerading mimicking and piggybacking are forms of spoofing. NSTISSI 4009 &text23=Advanced Development Model &text24=Advanced Data Processing &text25=Automatic Data Processing System &text26=Person or organization that must be denied access to information. NSTISSI 4009 &text27=Assessment of significant new trends or developments regarding the threat to the IS of an organization. This assessment may include analytical insights into trends intentions technologies or tactics of an adversary targeting ISs. NSTISSI 4009 &text28=Application Entity &text29=Air Force Information Warfare Center &text30=Address Indicator Group &text31=Advanced Intelligence Network &text32=Area Interswitch Rekeying Key &text33=Automated Information System &text34=Automated Information Systems Security &text35=Anti-Jamming &text36=Automatic Remote Rekeying &text37=Automatic Key Distribution/Rekeying Control Unit &text38=Automatic Key Distribution Center &text39=Automated Key Management Center &text40=Automated Key Management System &text41=Accounting Legend Code &text42=Notification of a specific attack directed at the IS of an organization. NSTISSI 4009 &text43=Person designated by proper authority to perform the duties of the COMSEC custodian during the temporary absence of the COMSEC custodian. NSTISSI 4009 &text44=1. Auto-Manual System 2. Autonomous Message Switch &text45=Advanced Narrowband Digital Voice Terminal &text46=American National Standards Institute &text47=Measures ensuring that transmitted information can be received despite deliberate jamming attempts. NSTISSI 4009 &text48=Measures preventing an opponent's participation in an IS. NSTISSI 4009 &text49=Automated Office Support Systems &text50=Adaptive Predictive Coding &text51=Approved Product List &text52=Auxiliary Power Unit &text53=Advanced Research Projects Agency Network &text54=American Standard Code for Information Interchange &text55=Assistant Secretary of DefenseSABI &text56=Assistant Secretary of Defense for Command Control Communications and Intelligence &text57=Advanced Self-Protection Jammer &text58=Group of parts elements subassemblies or circuits that are removable items of COMSEC equipment. NSTISSI 4009 &text59=Automated Information System Security Incident Support TeamNSTISSI 4009 &text60=See information assuranceNSTISSI 4009 &text61=Approval for Service Use &text62=Asynchronous Transfer Mode &text63=Intentional act of attempting to bypass one or more of the following security controls of an IS: nonrepudiation authentication integrity availability or confidentiality. NSTISSI 4009 &text64=In Trusted Computing Base (TCB) design a character entered from a terminal that tells the TCB the user wants a secure communications path from the terminal to some trusted code to provide a secure service for the user. NSTISSI 4009 &text65=Independent review and examination of records and activities to assess the adequacy of system controls to ensure compliance with established policies and operational procedures and to recommend necessary changes in controls policies or procedures. NSTISSI 4009 &text66=Chronological record of system activites to enable the reconstruction and examination of the sequence of events and/or changes in an event. Audit trail may apply to information in an IS to message routing in a communications system or to the transfer of COMSEC material. NSTISSI 4009 &text67=To verify the identity of a user user device or other entity or the integrity of data stored transmitted or otherwise exposed to unauthorized modification in an IS or to establish the validity of a transmission. NSTISSI 4009 &text68=Security measure designed to establish the validity of a transmission message or originator or a means of verifying an individual's authorization to receive specific categories of information. NSTISSI 4009 &text69=Cryptosystem or process used for authentication. NSTISSI 4009 &text70=Means used to confirm the identity of a station originator or individual. NSTISSI 4009 &text71=Access privileges granted to a user program or process. NSTISSI 4009 &text72=Manufacturer of INFOSEC equipment authorized to produce quantities in excess of contractual requirements for direct sale to eligible buyers. Eligible buyers are typically U.S. Government organiztions or U.S. Government contractors. NSTISSI 4009 &text73=Program in which a vendor producing an INFOSEC product under contract to the National Security Agency is authorized to produce that product in numbers exceeding the contracted requirements for direct marketing and sale to eligible buyers. Eligible buyers are typically U.S. Government organizations or U.S. Government contractors. Products approved for marketing and sale through the Authorized Vendor Program are placed on the Endorsed Cryptographic Products List. NSTISSI 4009 &text74=Automatic Digital Network &text75=Programmable hand-held crypto-equipment used to perform encoding and decoding functions. NSTISSI 4009 &text76=See Information System. NSTISSI 4009 &text77=See information systems security. NSTISSI 4009 &text78=Procedure to rekey distant crypto-equipment electronically without specific actions by the receiving terminal operator. NSTISSI 4009 &text79=Use of automated procedures to ensure controls are not circumvented or the use of these tools to track actions taken by subjects suspected of misusing the IS. NSTISSI 4009 &text80=Auxiliary Vector &text81=Timely reliable access to data and information services for authorized users. NSTISSI 4009 &text82=Authorized Vendor Program &text83=Synonymous with trap door. NSTISSI 4009 &text84=Copy of files and programs made to facilitate recovery if necessary. NSTISSI 4009 &text85=Display on an IS that sets parameters for system or data use. NSTISSI 4009 &text86=Format-state transition model of a computer security policy that describes a formal set of access controls based on information sensitivity and subject authorizations. See star (*) property and simple security property. NSTISSI 4009 &text87=Condition of cryptographic data that cannot be compromised by human access. NSTISSI 4009 &text88=Nonhostile environment that may be protected from external hostile elements by physical personnel and procedural security countermeasures. NSTISSI 4009 &text89=Level of trust defined by the DoD Trusted Computer System Evaluation Criteria to be beyond the state-of-the-art technology. It includes all the A1-level features plus additional ones not required at the A1-level. NSTISSI 4009 &text90=Process of associating a specific communications terminal with a specific cryptographic key or associating two related elements of information. NSTISSI 4009 &text91=Automated methods of authenticating or verifying an individual based upon a physical or behavioral characteristic. NSTISSI 4009 &text92=Ratio between the number of bits incorrectly received and the total number of bits transmitted in a telecommunications system. NSTISSI 4009 &text93=Designation applied to information systems and to associated areas circuits components and equipment in which national security information is not processed. NSTISSI 4009 &text94=Software hardware or physical barrier that limits access to a system or part of a system. NSTISSI 4009 &text95=List containing words and phrases used to shorten messages. NSTISSI 4009 &text96=Act of searching through IS storage to locate or acquire information without necessarily knowing the existence or format of information being sought. NSTISSI 4009 &text97=Simultaneous encrytption of all channels of a multichannel telecommunications link. NSTISSI 4009 &text98=Certification and Accreditation &text99=Command and Control GuardSABI &text100=Command Control Communications and Computers &text101=Certification Authority &text102=Procedure for identifying and authenticating a remote IS terminal whereby the host system disconnects the terminal and re-establishes contact. Synonymous with dial back. NSTISSI 4009 &text103=Cryptosystem used to encipher/decipher call signs address groups and address indicating groups. NSTISSI 4009 &text104=Type of protective package used to contain and dispense key in punched or printed tape form. NSTISSI 4009 &text105=Protected identifier that both identifies the object and specifies the access rights to be allowed to the subject who possesses the capability. In a capability-based system access to protected objects such as files is granted if the would-be subject possesses a capability for the object. NSTISSI 4009 &text106=Downward flow of information through a range of security levels greater than the accreditation range of a system network or component. NSTISSI 4009 &text107=Restrictive label applied to classified or unclassified information to limit access. NSTISSI 4009 &text108=Configuration Control Board &text109=Commercial COMSEC Endorsement Program &text110=Controlled Cryptographic Item &text111=Device embodying a cryptographic logic or other COMSEC design that NSA has approved as a Controlled Cryptographic Item (CCI). It performs the entire COMSEC function but depends upon the host equipment to operate. NSTISSI 4009 &text112=Part of a Controlled Cryptographic Item (CCI) that does not perform the entire COMSEC function but depends upon the host equipment or assembly to complete and operate the COMSEC function. NSTISSI 4009 &text113=Telecommunications or information handling equipment that embodies a Controlled Cryptographic Item (CCI) component or CCI assembly and performs the entire COMSEC function without dependence on host equipment to operate. NSTISSI 4009 &text114=Circuit Control Officer &text115=Critical Design Review &text116=Contract Data Requirements List &text117=Cryptographic Device Services &text118=Office of a federal department or agency that keeps records of accountable COMSEC material held by elements subject to its oversight. NSTISSI 4009 &text119=Communications Electronics Operating Instruction &text120=Compromising Emanation Performance Requirement &text121=1. Cryptographic Equipment Room 2. Communication Equipment Room &text122=Computer Emergency Response Team &text123=Record holding security information about an IS user and vouches to the truth and accuracy of the information it contains. NSTISSI 4009 &text124=Process whereby certificates (as defined above) are generated stored protected transferred loaded used and destroyed. NSTISSI 4009 &text125=Statement attached to a COMSEC audit report by which a COMSEC custodian certifies that all actions have been completed. NSTISSI 4009 &text126=List of invalid certificates (as defined above) that have been revoked by the issuer. NSTISSI 4009 &text127=Comprehensive evaluation of the technical and nontechnical security features of an IS and other safeguards made in support of the accreditation process to establish the extent to which a particular design and implementation meets a set of specified security requirements. NSTISSI 4009 &text128=Individual responsible for making a technical judgment of the system's compliance with stated requirements identifying and assessing the risks associated with operating the system coordinating the certification activities and consolidating the final certification and accreditation packages. NSTISSI 4009 &text129=Third level of the Public Key Infrastructure (PKI) Certification Management Authority responsible for issuing and revoking user certificates and exacting compliance to the PKI policy as defined by the parent Policy Creation Authority (PCA). NSTISSI 4009 &text130=Commercial-off-the-shelf (COTS) workstation with a trusted operating system and special purpose application software that is used to issue certificates. NSTISSI 4009 &text131=Product of the certification effort documenting the detailed results of the certification activities. NSTISSI 4009 &text132=Software and hardware security tests conducted during development of an IS. NSTISSI 4009 &text133=An experienced technically qualified U.S. Government employee who has met established certification requirements in accordance with NSTISSC-approved criteria and has been appointed by a U.S. Government Department or Agency to fulfill CTTA responsibilites. NSTISSI 4009 &text134=Criticality Factor &text135=Common Fill Device &text136=Prearranged procedure in which a subject requests authentication of another and the latter establishes validity with a correct reply. NSTISSI 4009 &text137=Cipher text generated by cryptographic logic to detect failures in cryptography. NSTISSI 4009 &text138=Value computed on data to detect error or manipulation during transmission. See hash total. NSTISSI 4009 &text139=Central Intelligence Agency &text140=Computer Incident Assessment Capability &text141=Crypto-Ignition Key &text142=Commander in Chief &text143=Any cryptographic system in which arbitrary symbols or groups of symbols represent units of plain text or in which units of plain text are rearranged or both. NSTISSI 4009 &text144=Enciphered information. NSTISSI 4009 &text145=Cryptographic logic that uses previous cipher text to generate a key stream. NSTISSI 4009 &text146=Process of enciphering audio information resulting in encrypted speech. NSTISSI 4009 &text147=Common Interswitch Rekeying Key &text148=Computer Security Incident Response Team &text149=Chairman Joint Chiefs of Staff &text150=Compartment Key &text151=Cooperative Key Generation &text152=Information that has been determined pursuant to Executive Order 12958 or any predecessor order or by the Atomic Energy Act of 1954 as amended to require protection against unauthorized disclosure and is marked to indicate its classified status. NSTISSI 4009 &text153=Removal of data from an IS its storage devices and other peripheral devices with storage capacity in such a way that the data may not be reconstructed using common system capabilities (i.e. keyboard strokes); however the data may be reconstructed using laboratory methods. Cleared media may be reused at the same classification level or at a higher level. Overwriting is one method of clearing. NSTISSI 4009 &text154=COMSEC Local Management Device &text155=Environment providing sufficient assurance that applications and equipment are protected against the introduction of malicious logic during an IS life cycle. Closed security is based upon a system's developers operators and maintenance personnel having sufficient clearances authorization and configuration control. NSTISSI 4009 &text156=Configuration Management &text157=COMSEC Material Control System &text158=Cryptonet Control Station &text159=Computer Network Defense &text160=Computer Network Defense &text161=Cryptonet Key &text162=(COMSEC) System of communication in which arbitrary groups of letters numbers or symbols represent units of plain text of varying length. NSTISSI 4009 &text163=Document containing plain text and code equivalents in a systematic arrangement or a technique of machine encryption using a word substitution technique. NSTISSI 4009 &text164=Group of letters numbers or both in a code system used to represent a plain text word phrase or sentence. NSTISSI 4009 &text165=Set of plain text words numerals phrases or sentences for which code equivalents are assigned in a code system. NSTISSI 4009 &text166=Procedure for initially keying crypto-equipment. NSTISSI 4009 &text167=Provides releasable low data transmission between high and low networks.SABI &text168=Individual responsible for the appointment of user representatives for a department agency or organization and their key ordering privileges. NSTISSI 4009 &text169=Relationship between NSA and industry in which NSA provides the COMSEC expertise (i.e. standards algorithms evaluations and guidance) and industry provides design development and production capabilities to produce a type 1 or type 2 product. Products developed under the CCEP may include modules subsystems equipment systems and ancillary devices. NSTISSI 4009 &text170=One of a family of devices developed to read-in transfer or store key. NSTISSI 4009 &text171=Concealing or altering of characteristic communications patterns to hide information that could be of value to an adversary. NSTISSI 4009 &text172=Deliberate transmission retransmission or alteration of communications to mislead an adversary's interpretation of the communications. See imitative communications deception and manipulative communications deception. NSTISSI 4009 &text173=Analytic model of communications associated with an organization or activity. The model is prepared from a systematic examination of communications content and patterns the functions they reflect and the communications security measures applied. NSTISSI 4009 &text174=Measures taken to deny unauthorized persons information derived from telecommunications and to ensure the authenticity of such telecommunications. Communications security includes cryptosecurity transmission security emission security and physical security of COMSEC material. NSTISSI 4009 &text175=A nonhierarchical grouping of sensitive information used to control access to data more finely than with hierarchical security classification alone. NSTISSI 4009 &text176=INFOSEC mode of operation wherein each user with direct or indirect access to a system its peripherals remote terminals or remote hosts has all of the following: a. Valid security clearance for the most restricted information processed in the system; b. Formal access approval and signed non-disclosure agreements for that information to which a user is to have access; and c. Valid need-to-know for information to which a user is to have access. NSTISSI 4009 &text177=Disclosure of information to unauthorized persons or a violation of the security policy of a system in which unauthorized intentional or unintentional disclosure modification destruction or loss of an object may have occurred. NSTISSI 4009 &text178=Unintentional signals that if intercepted and analyzed would disclose the information transmitted received handled or otherwise processed by information systems equipment. See TEMPEST. NSTISSI 4009 &text179=Computer Security - measures and controls that ensure confidentiality integrity and availability of the information processed and stored by a computer. &text180=Intentional or reckless misuse alteration disruption or destruction of information processing resources. NSTISSI 4009 &text181=Use of a crypto-algorithm program by a computer to authenticate or encrypt/decrypt information. NSTISSI 4009 &text182=Measures and controls that ensure confidentiality integrity and availability of IS assests including hardware software firmware and information being processed stored and communicated. NSTISSI 4009 &text183=See incident. NSTISSI 4009 &text184=Hardware/software designed to provide computer security features in a larger system environment. NSTISSI 4009 &text185=Communications Security &text186=Administrative entity identified by an account number used to maintain accountability custody and control of COMSEC material. NSTISSI 4009 &text187=Examination of the holdings records and procedures of a COMSEC account ensuring all accountable COMSEC material is properly handled and safeguarded. NSTISSI 4009 &text188=COMSEC material that assists in securing telecommunications and is required in the production operation or maintenance of COMSEC systems and their components. COMSEC keying material callsign/frequency systems and supporting documentation such as operating and maintenance manuals are examples of COMSEC aids. NSTISSI 4009 &text189=Definable perimeter encompassing all hardware firmware and software components performing critical COMSEC functions such as key generation and key handling and storage. NSTISSI 4009 &text190=Collection of NSA approved microchips. NSTISSI 4009 &text191=Computer instructions or routines controlling or affecting the externally performed functions of key generation key distribution message encryption/decryption or authentication. NSTISSI 4009 &text192=Person designated by proper authority to be responsible for the receipt transfer accounting safeguarding and destruction of COMSEC material assigned to a COMSEC account. NSTISSI 4009 &text193=Equipment or combination of components ready for use in a COMSEC application. NSTISSI 4009 &text194=Equipment designed to provide security to telecommunications by converting information to a form unintelligible to an unauthorized interceptor and subsequently by reconverting such information to its original form for authorized recipients; also equipment designed specifically to aid in or as an essential element of the conversion process. COMSEC equipment includes crypto-equipment crypto-ancillary equipment cryptoproduction equipment and authentication equipment. NSTISSI 4009 &text195=Space used for generating storing repairing or using COMSEC material. NSTISSI 4009 &text196=Occurrence that potentially jeopardizes the security of COMSEC material or the secure transmission of national security information. NSTISSI 4009 &text197=COMSEC incident that has been investigated evaluated and determined to jeopardize the security of COMSEC material or the secure transmission of information. NSTISSI 4009 &text198=Person who manages the COMSEC resources of an organization. NSTISSI 4009 &text199=Item designed to secure or authenticate telecommunications. COMSEC material includes but is not limited to key equipment devices documents firmware or software that embodies or describes cryptographic logic and other items that perform COMSEC functions. NSTISSI 4009 &text200=Logistics and accounting system through which COMSEC material marked CRYPTO is distributed controlled and safeguarded. Included are the COMSEC central offices of record cryptologistic depots and COMSEC accounts. COMSEC material other than key may be handled through the COMSEC Material Control System. NSTISSI 4009 &text201=See information systems security equipment modification. NSTISSI 4009 &text202=Removable component that performs COMSEC functions in a telecommunications equipment or system. NSTISSI 4009 &text203=Act of listening to copying or recording transmissions of one's own official telecommunications to analyze the degree of security. NSTISSI 4009 &text204=Statement of COMSEC measures and materials used to protect a given operation system or organization. NSTISSI 4009 &text205=Organized collection of COMSEC and communications information relative to a given operation system or organization. NSTISSI 4009 &text206=Information required by a COMSEC equipment or system to enable it to properly handle and control key. NSTISSI 4009 &text207=Teaching of skills relating to COMSEC accounting use of COMSEC aids or installation use maintenance and repair of COMSEC equipment. NSTISSI 4009 &text208=Document detailing the method act process or effect of using an IS. NSTISSI 4009 &text209=Assurance that information is not disclosed to unauthorized persons processes or devices. NSTISSI 4009 &text210=Process of controlling modifications to hardware firmware software and documentation to ensure the IS is protected against improper modifications prior to during and after system implementation. NSTISSI 4009 &text211=Management of security features and assurances through control of changes made to hardware software firmware documentation test test fixtures and test documentation throughout the life cycle of an IS. NSTISSI 4009 &text212=See covert channel. NSTISSI 4009 &text213=Synonymous with star (*) property. NSTISSI 4009 &text214=Concept of Operations &text215=The introduction of data of one security classification or security category into data of a lower security classification or different security category. NSTISSI 4009 &text216=Key held for use under specific operational conditions or in support of specific contingency plans. NSTISSI 4009 &text217=Plan maintained for emergency response backup operations and post-disaster recovery for an IS to ensure the availability of critical resources and to facilitate the continuity of operations in an emergency situation. NSTISSI 4009 &text218=The C2 level of protection described in the Trusted Computer System Evaluation Criteria (Orange Book). Its major characteristics are: individual accountability audit access control and object reuse. NSTISSI 4009 &text219=Secure telecommunications or information handling equipment or associated cryptographic component that is unclassified but governed by a special set of control requirements. Such items are marked CONTROLLED CRYPTOGRAPHIC ITEM or where space is limited CCI. NSTISSI 4009 &text220=See multilevel security. NSTISSI 4009 &text221=Condition existing when access control is applied to all users and components of an IS. NSTISSI 4009 &text222=Three-dimensional space surrounding IS equipment within which unauthorized persons are denied unrestricted access and are either escorted by authorized persons or are under continuous physical or electronic surveillance. NSTISSI 4009 &text223=Official responsible for directing the operation of a cryptonet and for managing the operational use and control of keying material assigned to the cryptonet. NSTISSI 4009 &text224=Continental United States &text225=Electronically exchanging functions of locally generated random components from which both terminals of a secure circuit construct traffic encryption key or key encryption key for use on that circuit. NSTISSI 4009 &text226=Synonymous with manual remote rekeying. NSTISSI 4009 &text227=1. Central Office of Record (COMSEC) 2. Contracting Officer Representative &text228=A mathematical proof of consistency between a specification and its implementation. NSTISSI 4009 &text229=Assessment of the cost of providing protection or security commensurate with the risk and magnitude of asset loss or damage. NSTISSI 4009 &text230=Commercial-Off-the-Shelf - Refers to commercial products available for general purchase. &text231=Action device procedure technique or other measure that reduces the vulnerability of an IS. NSTISSI 4009 &text232=Unintended and/or unauthorized communications path that can be used to transfer information in a manner that violates an IS security policy. See overt channel and exploitable channel. NSTISSI 4009 &text233=Determination of the extent to which the security policy model and subsequent lower-level program descriptions may allow unauthorized access to information. NSTISSI 4009 &text234=Covert channel involving the direct or indirect writing to a storage location by one process and the direct or indirect reading of the storage location by another process. Covert storage channels typically involve a finite resource (e.g. sectors on a disk) that is shared by two subjects at different security levels. NSTISSI 4009 &text235=Covert channel in which one process signals information to another process by modulating its own use of system resources (e.g. central processing unit time) in such a way that this manipulation affects the real response time observed by the second process. NSTISSI 4009 &text236=COMSEC Parent Switch &text237=Central Processing Unit &text238=Information passed from one entity to another used to establish the sending entity's access rights. NSTISSI 4009 &text239=Those physical and cyber-based systems essential to the minimum operations of the economy and government. NSTISSI 4009 &text240=Certificate Revocation List &text241=COMSEC Resources Program (Budget) &text242=Certification Requirements Review &text243=Operations performed in converting encrypted messages to plain text without initial knowledge of the crypto-algorithm and/or key employed in the encryption. NSTISSI 4009 &text244=Marking or designator identifying COMSEC keying material used to secure or authenticate telecommunications carrying classified or sensitive U.S. Government or U.S. Government-derived information. NSTISSI 4009 &text245=Circuit or device that detects failures or aberrations in the logic or operation of crypto-equipment. Crypto-alarm may inhibit transmission or may provide a visible and/or audible alarm. NSTISSI 4009 &text246=Well-defined procedure or sequence of rules or steps or a series of mathematical equations used to describe cryptographic processes such as encryption/decryption key generation authentication signatures etc. NSTISSI 4009 &text247=Equipment designed specifically to facilitate efficient or reliable operation of crypto-equipment without performing cryptographic functions itself. NSTISSI 4009 &text248=Equipment that embodies a cryptographic logic. NSTISSI 4009 &text249=Pertaining to or concerned with cryptography. NSTISSI 4009 &text250=Hardware or firmware embodiment of the cryptographic logic. A cryptographic component may be a modular assembly a printed wiring assembly a microcircuit or a combination of these items. NSTISSI 4009 &text251=Controlled-access room in which cryptosystems are located. NSTISSI 4009 &text252=Function used to set the state of a cryptographic logic prior to key generation encryption or other operating mode. NSTISSI 4009 &text253=The embodiment of one (or more) crypto-algorithm(s) along with alarms checks and other processes essential to effective and secure performance of the cryptographic process(es). NSTISSI 4009 &text254=Function that randomly determines the transmit state of a cryptographic logic. NSTISSI 4009 &text255=Art or science concerning the principles means and methods for rendering plain information unintelligible and for restoring encrypted information to intelligible form. NSTISSI 4009 &text256=Device or electronic key used to unlock the secure mode of crypto-equipment. NSTISSI 4009 &text257=Field encompassing both cryptography and cryptanalysis. NSTISSI 4009 &text258=Stations holding a common key. NSTISSI 4009 &text259=Time span during which each key setting remains in effect. NSTISSI 4009 &text260=Process by which a receiving decrypting cryptographic logic attains the same internal state as the transmitting encrypting logic. NSTISSI 4009 &text261=Associated INFOSEC items interacting to provide a single means of encryption or decryption. NSTISSI 4009 &text262=Process of establishing the exploitability of a cryptosystem normally by reviewing transmitted traffic protected or secured by the system under study. NSTISSI 4009 &text263=Process of determining vulnerabilities of a cryptosystem. NSTISSI 4009 &text264=Examination of a cryptosystem by the controlling authority ensuring its adequacy of design and content continued need and proper distribution. NSTISSI 4009 &text265=Management technique in which actual holders of a cryptosystem express opinions on the system's suitability and provide usage information for technical evaluation. NSTISSI 4009 &text266=Computer Software Configuration Item &text267=Communications Security Element &text268=Computer Systems Manager &text269=1. COMSEC Subordinate Switch 2. Constant Surveillance Service (Courier) 3. Continuous Signature Service (Courier) 4. Coded Switch System &text270=Contractor Special Security Officer &text271=Computer Security Technical Vulnerability Report Program &text272=Certification Test and Evaluation &text273=Cipher Text Auto-Key &text274=Certified TEMPEST Technical Authority &text275=COMSEC Utility Program &text276=Error checking mechanism that checks data integrity by computing a polynomial algorithm based checksum. NSTISSI 4009 &text277=Designated Approving Authority &text278=Discretionary Access Control &text279=Demand Assigned Multiple Access &text280=Set of properties about the external environment for which there is no corresponding vulnerability and therefore no implied risk. NSTISSI 4009 &text281=Set of properties about the internal environment for which there is no corresponding threat and therefore no implied risk. NSTISSI 4009 &text282=The compilation of unclassified individual data systems and data elements that results in the totality of the information being classified. NSTISSI 4009 &text283=Cryptographic algorithm designed for the protection of unclassified data and published by the National Institute of Standards and Technology in Federal Information Processing Standard (FIPS) Publication 46. NSTISSI 4009 &text284=Synonymous with information flow control. NSTISSI 4009 &text285=Condition that exists when data is unchanged from its source and has not been accidentally or maliciously modified altered or destroyed. NSTISSI 4009 &text286=Corroborating the source of data is as claimed. NSTISSI 4009 &text287=The protection of data from unauthorized (accidental or intentional) modification destruction or disclosure. NSTISSI 4009 &text288=Fill device designed to securely store transport and transfer electronically both COMSEC and TRANSEC key designed to be backward compatible with the previous generation of COMSEC common fill devices and programmable to support modern mission systems. NSTISSI 4009 &text289=Director Central Intelligence Directive &text290=1. Defense Communications System 2. Defense Courier Service &text291=Design Controlled Spare Part(s) &text292=Dual Driver Service (Courier) &text293=Revocation of the certification of an IS item or equipment for cause. NSTISSI 4009 &text294=Convert enciphered text to plain text by means of a cryptographic system. NSTISSI 4009 &text295=Convert encoded text to plain text by means of a code. NSTISSI 4009 &text296=Generic term encompassing decode and decipher. NSTISSI 4009 &text297=IS security mode of operation wherein each user with direct or indirect access to the system its peripherals remote terminals or remote hosts has all of the following: a. valid security clearance for all information within the system; b. formal access approval and signed nondisclosure agreements for all the information stored and/or processed (including all compartments subcompartments and/or special access programs); and c. valid need-to-know for all information contained within the IS. When in the dedicated security mode a system is specifically and exclusively dedicated to and controlled for the processing of one particluar type or classification of information either for full-time operation or for a specified period of time. NSTISSI 4009 &text298=Temporary classification reflecting the highest classification being processed in an IS. Default classification is included in the caution statement affixed to an object. NSTISSI 4009 &text299=Procedure that reduces the magnetic flux to virtual zero by applying a reverse magnetizing field. Also called demagnetizing. NSTISSI 4009 &text300=INFOSEC program in which the Director National Security Agency delegates on a case by case basis the development and/or production of an entire telecommunications product including the INFOSEC portion to a lead department or agency. NSTISSI 4009 &text301=Result of any action or series of actions that prevents any part of an IS from functioning. NSTISSI 4009 &text302=See full maintenance. NSTISSI 4009 &text303=Data Encryption Standard &text304=Top-level specification written in a natural language (e.g. English) and informal design notation or a combination of the two. Descriptive top-level specification required for a class B2 and B3 (as defined in the Orange Book Department of Defense Trusted Computer System Evaluation Criteria DoD 5200.28-STD) information system completely and accurately describes a trusted computing base. See formal top-level specification. NSTISSI 4009 &text305=Part or subassembly for a COMSEC equipment or device with an NSA controlled design. NSTISSI 4009 &text306=Set of documents required for Trusted Computer System Evaluation Criteria (TCSEC) classes C1 and above (as defined in the Orange Book Department of Defense Trusted Computer System Evaluation Criteria DoD 5200.28-STD) whose primary purpose is to define and describe the properties of a system. As it relates to TCSEC design documentation provides an explanation of how the security policy of a system is translated into a technical solution via the Trusted Computing Base (TCB) hardware software and firmware. NSTISSI 4009 &text307=Official with the authority to formally assume responsibility for operating a system at an acceptable level of risk. This term is synonymous with designated accrediting authority and delegated accrediting authority. NSTISSI 4009 &text308=Defense Intelligence Agency &text309=Synonymous with call back. NSTISSI 4009 &text310=Directory Information Base &text311=Cryptographic process used to assure message originator authenticity integrity and nonrepudiation. Same as electronic signature. NSTISSI 4009 &text312=Procedure that appends data to or performs a cryptographic transformation of a data unit. The appended data or cryptographic transformation allows reception of the data unit and protects against forgery e.g. by the recipient. NSTISSI 4009 &text313=Defense Information Infrastructure &text314=Shipment of COMSEC material directly from NSA to user COMSEC accounts. NSTISSI 4009 &text315=Defense Investigative Service &text316=Defense Information Systems Agency &text317=Means of restricting access to objects based on the identity and need-to-know of users and/or groups to which the object belongs. Controls are discretionary in the sense that a subject with the certain access permission is capable of passing that permission (directly or indirectly) to any other subject. See mandatory access control. NSTISSI 4009 &text318=Defense Information System Network &text319=Globally unique identifier representing an individual's identity. NSTISSI 4009 &text320=DOD Directive 5200.40 DOD Information Technology Security Certification and Accreditation Process (DITSCAP); signed 30 December 1997 &text321=Dedicated Loop Encryption Device &text322=Direct Memory Access &text323=Direct Memory System &text324=Department of Defense &text325=Document containing basic requirements and evaluation classes for assessing degrees of effectiveness of hardware and software security controls built into an IS. This document DOD 5200.38-STD is frequently referred to as the Orange Book. NSTISSI 4009 &text326=Department of Energy &text327=Unique context (e.g. access control parameters) in which a program is operating; in effect the set of objects a subject has the priviledge to access. NSTISSI 4009 &text328=Term used to compare IS security levels. Security level S1 is said to dominate security S2 if the hierarchical classification of S1 is greater than or equal to that of S2 and the non-hierarchical categories of S1 include all those of S2 as a subset. NSTISSI 4009 &text329=Deguasser Products List (a section in the INFOSEC Products and Services Catalogue) &text330=Procedure under which a COMSEC account custodian initially receipts a COMSEC material and then provides no further accounting for it to its central office of record. Local accountability of the COMSEC material may continue to be required. See accounting legend code. NSTISSI 4009 &text331=Digital Signature Algorithm &text332=DISN Security Accreditation Working GroupSABI &text333=Defense Switched Network &text334=Digital Subscriber Voice Terminal &text335=Development Test and Evaluation &text336=Data Transfer Device &text337=Descriptive Top-Level Specification &text338=Diplomatic Telecommunications Service &text339=Directory User Agent &text340=Engineering Development Model &text341=Emergency Action Message &text342=Electronic Commerce &text343=Electronic Counter-Countermeasures &text344=Electronic Countermeasures &text345=Engineering Change Proposal &text346=Endorsed Cyptographic Products List (a section in the Information Systems Security Products and Services Catalogue) &text347=Error Detection and Correction &text348=Endorsed Data Encryption Standard Products List &text349=Electronic Data Interchange &text350=Engineering Development Model &text351=Engineering Design Review &text352=Electronic Fill Device &text353=Encrypt For Transmission Only &text354=Electronic Generation Accounting and Distribution System &text355=Electronic Key Management System &text356=Key generated in a COMSEC device by introducing (either mechanically or electronically) a seed key into the device and then using the seed together with a software algorithm stored in the device to produce the desired key. NSTISSI 4009 &text357=Interoperable collection of systems being developed by services and agencies of the U.S. Governent to automate the planning ordering generating distributing storing filling using and destroying of electronic key and management of other types of COMSEC materials. NSTISSI 4009 &text358=Services providing interpersonal messaging capability; meeting specific functional management and technical requirements; and yielding a business-quality electronic mail service suitable for the conduct of official government business. NSTISSI 4009 &text359=Protection resulting from measures designed to deny unauthorized persons information derived from the interception and analysis of noncommunications electromagnetic radiations. NSTISSI 4009 &text360=See digital signature. NSTISSI 4009 &text361=Removable item of COMSEC equipment assembly or subassembly; normally consisting of a single piece or group of replaceable parts. NSTISSI 4009 &text362=Electronic Security &text363=Computer system that is an integral part of a larger system. NSTISSI 4009 &text364=Cryptosystem performing or controlling a function as an integral element of a larger system or subsystem. NSTISSI 4009 &text365=Cryptography engineered into an equipment or system whose basic function is not cryptographic. NSTISSI 4009 &text366=Protection resulting from measures taken to deny unauthorized persons information derived from intercept and analysis of compromising emanations from crypto-equipment or an IS. NSTISSI 4009 &text367=Emissions Security &text368=Convert plain text to cipher text by means of a cryptographic system. NSTISSI 4009 &text369=Convert plain text to cipher text by means of a code. NSTISSI 4009 &text370=Generic term encompassing encipher and encode. NSTISSI 4009 &text371=Set of mathematically expressed rules for rendering data unintelligible by executing a series of conversions controlled by a key. NSTISSI 4009 &text372=Accounting for all the accountable components of a COMSEC equipment configuration by a single short title. NSTISSI 4009 &text373=Unclassified cryptographic equipment that embodies a U.S. Government classified cryptographic logic and is endorsed by NSA for the protection of national security information. See type 2 product. NSTISSI 4009 &text374=NSA approval of a commercially developed product for safeguarding national security information. NSTISSI 4009 &text375=Encryption of information at its origin and decryption at its intended destination without intermediate decryption. NSTISSI 4009 &text376=Safeguarding information in an IS from point of origin to point of destination. NSTISSI 4009 &text377=Deliberate planting of apparent flaws in an IS for the purpose of detecting attempted penetrations. NSTISSI 4009 &text378=Aggregate of external procedures conditions and objects affecting the development operation and maintenance of an IS. NSTISSI 4009 &text379=Executive Order &text380=Evaluated Products List (a section in the INFOSEC Products and Services Catalogue) &text381=Process intended to render magnetically stored information irretrievable by normal means. NSTISSI 4009 &text382=Equipment Radiation TEMPEST Zone &text383=Execution Team &text384=Endorsed Tools List &text385=Endorsed TEMPEST Products List &text386=Endorsed for Unclassified Cryptographic Information &text387=Enforcement Vector &text388=Equipment hardware software and/or firmware evaluated by the NCSC in accordance with DoD TCSEC and found to be technically compliant at a particular level of trust. The EPL is included in the NSA Information System Security Products and Services Catalogue. NSTISSI 4009 &text389=(IS) Occurance not yet assessed that may affect the performance of an IS. NSTISSI 4009 &text390=One of several states in which an IS may operate and the only one in which certain privileged instructions may be executed. Such privileged instructions cannot be executed when the system is operating in other (e.g. user) states. Synonymous with supervisor state. NSTISSI 4009 &text391=Key used exclusively to safeguard communications transmitted over-the-air during military or organized civil training exercises. NSTISSI 4009 &text392=Channel that allows the violation of the security policy governing an IS and is usable or detectable by subjects external to the trusted computing base. See covert channel. NSTISSI 4009 &text393=Capability of crypto-equipment or secure telecommunications equipment to resist efforts to extract key. NSTISSI 4009 &text394=Automatic protection of programs and/or processing systems when hardware or software failure is detected. NSTISSI 4009 &text395=Selective termination of affected nonessential processing when hardware or software failure is determined to be imminent. NSTISSI 4009 &text396=Unauthorized access to data resulting from hardware or software failure. NSTISSI 4009 &text397=Methodology used to detect imminent hardware or software failure and provide fail safe or fail soft recovery. NSTISSI 4009 &text398=Fiber Distributed Data Interface &text399=Fill Device Interface Unit &text400=IS hardware provided restriction to prevent a program from accessing data in another user's segment of storage. NSTISSI 4009 &text401=Aggregate of processes and procedures designed to inhibit unauthorized access contamination elimination modification or destruction of a file or any of its contents. NSTISSI 4009 &text402=Means by which access to computer files is limited to authorized users only. NSTISSI 4009 &text403=COMSEC item used to transfer or store key in electronic form or to insert key into a crypto-equipment. NSTISSI 4009 &text404=Federal Information Processing Standard &text405=Key management protocol based on public key cryptography. NSTISSI 4009 &text406=System designed to defend against unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software or a combination of both. NSTISSI 4009 &text407=Program recorded in permanent or semipermanent computer memory. NSTISSI 4009 &text408=Fleet Information Warfare Center &text409=COMSEC facility located in an immobile structure or aboard a ship. &text410=Error of commission omission or oversight in an IS that may allow protection mechanisms to be bypassed. NSTISSI 4009 &text411=System analysis and penetration technique in which the specification and documentation for an IS are analyzed to produce a list of hypothetical flaws. The list is prioritized on the basis of the estimated probability that a flaw exists on the ease of exploiting it and on the extent of control or compromise it would provide. The prioritized list is used to perform penetration testing of a system. NSTISSI 4009 &text412=Insertion of a large volume of data resulting in denial of service. NSTISSI 4009 &text413=Foreign Owned Controlled or Influenced &text414=Documented approval by a data owner allowing access to a particular category of information. NSTISSI 4009 &text415=Software development strategy that proves security design specifications. NSTISSI 4009 &text416=Complete and convincing mathematical argument presenting the full logical justification for each proof step and for the truth of a theorem or set of theorems. These formal proofs provide A1 and beyond A1 assurance under the DoD Trusted Computer System Evaluation Criteria (Orange Book). NSTISSI 4009 &text417=Mathematically precise statement of a security policy. Such a model must define a secure state an initial state and how the model represents changes in state. The model must be shown to be secure by proving the initial state is secure and all possible subsequent states remain secure. NSTISSI 4009 &text418=Top-level specification written in a formal mathematical language to allow theorems showing the correspondence of the system specification to its formal requirements to be hypothesized and formally proven. NSTISSI 4009 &text419=Process of using format proofs to demonstrate the consistency between formal specification of a system and formal security policy model (design verification) or between formal specification and its high-level program implementation (implementation verification). NSTISSI 4009 &text420=For Official Use Only - Information that has not been given a security classification pursuant to the criteria of an Executive Order but which may be withheld from public disclosure under the criteria of the Freedom of Information Act Title 5 U. S. C. Section 552. &text421=Formal Qualification Testing &text422=Repeated switching of frequencies during radio transmission according to a specified algorithm to minimize unauthorized interception or jamming of telecommunications. NSTISSI 4009 &text423=Security filter logically separated from the remainder of an IS to protect system integrity. Synonymous with firewall. NSTISSI 4009 &text424=Functional Security Requirements Specification &text425=Federal Secure Telephone Service &text426=File Transfer Access Management &text427=Formal Top-Level Specification &text428=Federal Telecommunications System &text429=Complete diagonistic repair modification and overhaul of INFOSEC equipment including repair of defective assemblies by piece part replacement. Also known as depot maintenance. See limited maintenance. NSTISSI 4009 &text430=See network sponsor. NSTISSI 4009 &text431=Segment of security testing in which advertised security mechanisms of an IS are tested under operational conditions. NSTISSI 4009 &text432=Interface providing a compatibility between networks by converting transmission speeds protocols codes or security measures. NSTISSI 4009 &text433=Global Command and Control System &text434=Government Emergency Telecommunications Service &text435=Government Furnished Equipment &text436=Global Operations Security Center &text437=Government-Off-The-Shelf &text438=Relative fineness to which an access control mechanism can be adjusted. NSTISSI 4009 &text439=Global Telecommunications Service &text440=Processor that limits exchange of information between systems. NSTISSI 4009 &text441=Ground Wave Emergency Network &text442=Integrated set of software tools for specifying coding and verifying programs written in the Gypsy language. NSTISSI 4009 &text443=Unauthorized user who attempts or gains access to an IS. NSTISSI 4009 &text444=Dialogue between two IS's for synchronizing identifying and authenticating themselves to one another. NSTISSI 4009 &text445=Physical keying material such as printed key lists punched or printed key tapes or programmable read-only memories (PROM). NSTISSI 4009 &text446=Permanently installed key. NSTISSI 4009 &text447=Value computed on data to detect error or manipulation. See checksum. NSTISSI 4009 &text448=Computation of a hash total. NSTISSI 4009 &text449=Memory address containing hash total. NSTISSI 4009 &text450=Hierarchical Development Methodology &text451=Specific location or geographic area where there are insufficient friendly security forces to ensure the safeguarding of information systems security equipment. NSTISSI 4009 &text452=See high risk environment. NSTISSI 4009 &text453=Hardened Unique Storage &text454=Hardened Unique Storage Key &text455=Installation and Checkout &text456=Improvement and Modification &text457=Information Assurance Support Environment &text458=Interim Approval to Operate &text459=In Accordance With &text460=Identity based Access Control &text461=Interface Control Unit &text462=Identify &text463=Process that an IS uses to recognize an entity. NSTISSI 4009 &text464=Smart card metal key or other physical object used to authenticate identity. NSTISSI 4009 &text465=Tests enabling an IS to authenticate users or resources. NSTISSI 4009 &text466=Intrusion Detection System &text467=Improved Emergency Message Automatic Transmission System &text468=Identification Friend or Foe &text469=Identification Friend Foe or Neutral &text470=Interarea Interswitch Rekeying Key &text471=Integrated Logistics Support &text472=Provides releasable low bulk image transfer between high and low networks.SABI &text473=Introduction of deceptive messages or signals into an adversary's telecommunications signals. See communications deception and manipulative communications deception. NSTISSI 4009 &text474=Form of spoofing. NSTISSI 4009 &text475=Electronic device or electronic equipment modification designed to gain unauthorized interception of information-bearing emanations. NSTISSI 4009 &text476=System Development Corporation's specification and verification methodology based on a nonprocedural state-transition specification language Ina Jo. The Ina Jo methodology incorporates user-supplied invariants to produce a formal demonstration that security properties are met. NSTISSI 4009 &text477=Accidental exposure of information to a person not authorized access. NSTISSI 4009 &text478=(IS) Assessed occurance having actual or potentially adverse effects on an IS. NSTISSI 4009 &text479=System flaw that exists when the operating system does not check all parameters fully for accuracy and consistency thus making the system vulnerable to penetration. NSTISSI 4009 &text480=An action specific generalized or theoretical that an adversary might be expected to take in preparation for an attack. NSTISSI 4009 &text481=Ability to associate positively the identity of a user with the time method and degree of access to an IS. NSTISSI 4009 &text482=Information Operations (IO) that protect and defend information and information systems by ensuring their availablity integrity authentication confidentiality and non-repudiation. This includes providing for restoration of information systems by incorporating protection detection and reaction capabilites. NSTISSI 4009 &text483=Independent and focused threat-based effort by an interdisciplinary simulated adversary to expose and exploit vulnerabilities as a means to improve the security posture of ISs. NSTISSI 4009 &text484=Extent to which protective measures techniques and procedures must be applied to ISs and networks based on risk threats vulnerability system interconnectivity considerations and information assurance needs. Levels of protection are: 1. Basic: IS and networks requiring implementation of standard minimum security countermeasures. 2. Medium: IS and networks requiring layering of additional safeguards above the standard minimum security countermeasures. 3. High: IS and networks requiring the most stringent protection and rigorous security countermeasures. NSTISSI 4009 &text485=Aggregate of individuals organizations or systems that collect process or disseminate information also included is the information itself. NSTISSI 4009 &text486=Procedure to ensure that information transfers within an IS are not made from a higher security level object to an object of a lower security level. NSTISSI 4009 &text487=Actions taken to affect adversary information and information systems while defending one's own information and information systems. NSTISSI 4009 &text488=The entire infrastructure organization personnel and components for the collection processing storage transmission display dissemination and disposition of information. NSTISSI 4009 &text489=Protection of information systems against unauthorized access to or modification of information whether in storage processing or transit and against the denial of service to authorized users including those measures necessary to detect document and counter such threats. NSTISSI 4009 &text490=Modification of any fielded hardware firmware software or portion thereof under NSA configuration control. There are three classes of modifications: Mandatory (to include human safety); optional/special mission modifications; and repair actions. These classes apply to elements subassemblies equipment systems and software packages performing functions such as key generation key distribution message encryption decryption authentication or those mechanisms necessary to satisfy security policy labeling identification or accountability. NSTISSI 4009 &text491=Principal advisor on computer security matters. NSTISSI 4009 &text492=Person responsible to the designated approving authority for ensuring the security of an information system throughout its life cycle from design through disposal. Synonymous with system security officer. NSTISSI 4009 &text493=Item (chip module assembly or equipment) technique or service that performs or relates to information systems security. NSTISSI 4009 &text494=Setting the state of a cryptographic logic prior to key generation encryption or other operating mode. NSTISSI 4009 &text495=Three dimensional space surrounding equipment that process classified and/or sensitive information within which TEMPEST exploitation is not considered practical or where legal authority to identify and/or remove a potential TEMPEST exploitation exists. Synonymous with zone of control. NSTISSI 4009 &text496=Quality of an IS that reflects the logical correctness and reliability of the operating system; the logical completeness of the hardware and software implementing protection mechanisms; and the consistency of the data structures and occurrence of the stored data. Note that in a formal security mode integrity is interpreted more narrowly to mean protection against unauthorized modification or destruction of information. NSTISSI 4009 &text497=Checksum capable of detecting modification of an IS. NSTISSI 4009 &text498=Common boundary between independent systems or modules where interactions take place. NSTISSI 4009 &text499=Technical document describing interface controls and identifying the authorities and responsibilities for ensuring the operation of such controls. This document is baselined during the preliminary design review and is maintained throughout the IS lifecycle. NSTISSI 4009 &text500=Temporary authorization granted by a designated approving authority for an IS to process information based on preliminary results of a security evaluation of the system. NSTISSI 4009 &text501=Hardware firmware or software features within an IS that restrict access to resources only to authorized subjects. NSTISSI 4009 &text502=Standard protocol for transmission of data from source to destinations in packet-switched communications network and interconnected systems of such networks. NSTISSI 4009 &text503=Network cryptographic unit that provides secure connections singularly or in simultaneous multiple connections between a host and a predetermined set of corresponding hosts. NSTISSI 4009 &text504=Interpersonal Messaging &text505=Internet Protocol Security Option &text506=Interswitch Rekeying Key &text507=Integrated Services Digital Network &text508=International Standards Organization &text509=Information Systems Security &text510=Information System Security Engineer &text511=Imagery Support Server EnvironmentSABI &text512=Information System Security Manager &text513=Information System Security Officer &text514=Information Technology &text515=Integration Test and Evaluation &text516=International Traffic in Arms Regulation &text517=Information Technology Security &text518=Information Warfare (INFOWAR) &text519=Joint Chiefs of Staff &text520=Monitors compliance with approved SABI configurations.SABI &text521=Joint Vulnerability Assessment ProcessSABI &text522=Key-Auto-Key &text523=Key Encryption Key &text524=Usually a sequence of random or pseudorandom bits used initially to set up and periodically change the operations performed in crypto-equipment for the purpose of encrypting or decrypting electronic signals or for determining electronic counter-countermeasures patterns (e.g. frequency hopping or spread spectrum) or for producing other key. NSTISSI 4009 &text525=Paper card containing a pattern of punched holes that establishes key for a specific cryptonet at a specific time. NSTISSI 4009 &text526=COMSEC facility generating and distributing key in electrical form. NSTISSI 4009 &text527=Printed series of key settings for a specific cryptonet. Key lists may be produced in list pad or printed tape format. NSTISSI 4009 &text528=Supervision and control of the process whereby key is generated stored protected transferred loaded used and destroyed. NSTISSI 4009 &text529=Key code or authentication information in physical or magnetic form. NSTISSI 4009 &text530=Public Key and its corresponding private key as used in public key cryptography. NSTISSI 4009 &text531=Key used to intialize a keystream generator for the production of other electronically generated key. NSTISSI 4009 &text532=Sequence of symbols (or their electrical or mechanical equivalents) produced in a machine or auto-manual cryptosystem to combine with plain text to produce cipher text control transmission security processes or produce key. NSTISSI 4009 &text533=Identification information associated with certain types of electronic key. NSTISSI 4009 &text534=Punched or magnetic tape containing key. Printed key in tape form is referred to as a key list. NSTISSI 4009 &text535=Irreversible cryptographic process for modifying key. NSTISSI 4009 &text536=Cryptographic logic using previous key to produce key. NSTISSI 4009 &text537=See Attack. NSTISSI 4009 &text538=Key that encrypts or decrypts other key for transmission or storage. NSTISSI 4009 &text539=Key code or authentication information in physical or magnetic form. NSTISSI 4009 &text540=Key Generator &text541=Key Management Application Service Element &text542=Key Management Center &text543=Key Management Identification Number &text544=Key Management Ordering and Distribution Center &text545=Key Management Protocol &text546=Key Management Protocol Data Unit &text547=Key Management System &text548=Key Management System Agent &text549=Key Management User Agent &text550=Key Processor &text551=Key Production Key &text552=Kernelized Secure Operating System &text553=Key Variable Generator &text554=See security label. NSTISSI 4009 &text555=Elementary-level mandatory access control protection features and intermediate-level discretionary access control features in a TCB that uses sensitivity labels to make access control decisions. NSTISSI 4009 &text556=Use of sophisticated signal recovery equipment in a laboratory environment to recover information from data storage media. NSTISSI 4009 &text557=Local Area Network &text558=Low-Cost Encryption/Authentication Device &text559=Law Enforcement Access Field &text560=Principle requiring that each subject be granted the most restrictive set of privileges needed for the performance of authorized tasks. Application of this principle limits the damage that can result from accident error or unauthorized use of an IS. NSTISSI 4009 &text561=Extent to which protective measures techniques and procedures must be applied to ISs and network-based on risk threat vulnerability system interconnectivity considerations and information assurance needs. The levels of protection are: 1. Basic; ISs and networks requiring implementation of standard minimum security countermeasures. 2. Median; ISs and networks requiring layering of additional safeguards above the standard minimum security countermeasures. 3. High; ISs and networks requiring the most stringent protection and rigorous security countermeasures. NSTISSI 4009 &text562=COMSEC maintenance restricted to fault isolation removal and replacement of plug-in assemblies. Soldering or unsoldering usually is prohibited in limited maintenance. See full maintenance. NSTISSI 4009 &text563=Local Information Management Systems &text564=Elimination of unintentional signals or noise induced or conducted on a telecommunications or information system signal power control indicator or other external interface line. NSTISSI 4009 &text565=Unintentional signals or noise induced or conducted on a telecommunications or information system signal power control indicator or other external interface line. NSTISSI 4009 &text566=Encryption of information between nodes of a communications system. NSTISSI 4009 &text567=Computer protection in which each protected object has a list of all subjects authorized to access it. See also ticket-oriented. NSTISSI 4009 &text568=Land Information Warfare Activity (ARMY) &text569=Loop Key Generator &text570=Local Management Device &text571=Local Management Device/Key Processor &text572=Layer Management Entry &text573=Layer Management Interface &text574=Organization responsible for generating and signing user certificates. NSTISSI 4009 &text575=An EKMS platform providing automated management of COMSEC material and generating key for designated users. NSTISSI 4009 &text576=Logical Co-Processing Kernel &text577=Protection system that involves matching a key or password with a specific access requirement. NSTISSI 4009 &text578=Resident computer program triggering an unauthorized act when particular states of an IS are realized. NSTISSI 4009 &text579=Means for assessing the effectiveness and degree to which a set of security and access control mechanisms meets security specifications. NSTISSI 4009 &text580=Descriptive title of a COMSEC item. NSTISSI 4009 &text581=Result of measures used to hide or disguise intentional electromagnetic transmissions. NSTISSI 4009 &text582=Result of measures to prevent the intercept of intentional electromagnetic transmissions. NSTISSI 4009 &text583=Linear Predictive Coding &text584=Low Probability of Detection &text585=Low Probability of Intercept &text586=Limited Rate Initial Preproduction &text587=Large Scale Integration &text588=1. Mandatory Access Control 2. Message Authentication Code &text589=Magnetic representation of residual information remaining on a magnetic medium after the medium has been cleared. See clearing. NSTISSI 4009 &text590=Software or firmware capable of performing an unauthorized function on an IS. NSTISSI 4009 &text591=Special instructions (trapdoors) in software allowing easy maintenance and additional features development. Since maintenance hooks frequently allow entry into the code without the usual checks they are a serious security risk if they are not removed prior to live implementation. NSTISSI 4009 &text592=Key intended only for in-shop use. NSTISSI 4009 &text593=Major Automated Information Systems Review Council &text594=Small application programs automatically downloaded and executed that perform an unauthorized function on an IS. NSTISSI 4009 &text595=Hardware software or firmware capable of performing an unauthorized function on an IS. NSTISSI 4009 &text596=1. Mandatory Modification 2. Metroplitan Area Network &text597=Means of restricting access to objects based on the sensitivity of the information contained in the objects and the formal authorization (i.e. clearance formal access approvals and need-to-know) or subjects to access information of such sensitivity. See discretionary access control. NSTISSI 4009 &text598=Change to a COMSEC end-item that NSA requires to be completed and reported by a specified date. See optional modification. NSTISSI 4009 &text599=Alteration or simulation of friendly telecommunications for the purpose of deception. See communications deception and imitative communications deception. NSTISSI 4009 &text600=Cryptosystem in which the cryptographic processes are performed without the use of crypto-equipment or auto-manual devices. NSTISSI 4009 &text601=Procedure by which a distant crypto-equipment is rekeyed electrically with specific actions required by the receiving terminal operator. NSTISSI 4009 &text602=Form of spoofing. NSTISSI 4009 &text603=A key device with electronic logic and circuits providing the capability for adding more operational CIKs to a keyset (maximum of seven) any time after fill procedure is completed. The master CIK can only be made during the fill procedure as the first CIK. NSTISSI 4009 &text604=Communications circuit identifier used for key card resupply purposes. NSTISSI 4009 &text605=Material Symbol &text606=Modification/Configuration Control Board &text607=Military Communications and Electronics Board &text608=Military Communications and Electronics Board Information Assurance &text609=Manipulation Detection Code &text610=Minimum Essential Emergency Communication Network &text611=The collection of residual information from data storage. NSTISSI 4009 &text612=Management Engineering Plan &text613=Minimum Essential Requirements &text614=Data associated with an authenticated message allowing a receiver to verify the integrity of the message. NSTISSI 4009 &text615=Information outside of the message text such as the header trailer etc. NSTISSI 4009 &text616=Sequence of bits transmitted over a communications system for synchronizing crypto-equipment. Some off-line cryptosystems such as the KL-51 and one-time pad systems employ message indicators to establish decryption starting points. NSTISSI 4009 &text617=Message Handling System &text618=Message Indicator &text619=Management Information Base &text620=Meaconing Intrusion Jamming and Interference &text621=Form of spoofing. NSTISSI 4009 &text622=Miniature Terminal &text623=Defines the intended operational capabilities of the IS. These capabilities are necessary to perform an assigned mission correct a deficiency or modify existing system capabilities.SABI &text624=Multi-level NetworkSABI &text625=Multilevel Security &text626=Multilevel Security Program Management Office &text627=Multilevel Security Working Group &text628=Mission Needs StatementSABI &text629=Memorandum of Agreement &text630=Description of the conditions under which an IS operates based on the sensitivity of information processed and the clearance levels format access approvals and need-to-know of its users. Four modes of operation are authorized for processing or transmitting information; dedicated mode system-high mode compartmented/partitioned mode and multilevel mode. NSTISSI 4009 &text631=Memorandum of Understanding &text632=Miniature Receiver Terminal &text633=Mobile Subscriber Equipment &text634=Equipment trusted to properly maintain and separate data of different security categories. NSTISSI 4009 &text635=INFOSEC mode of operation wherein all the following statements are satisfied concerning the users who have direct or indirect access to the system its peripherals remote terminals or remote hosts; a. some users do not have a valid security clearance for all the information processed in the IS; b. all users have the proper security clearance and appropriate formal access approval for that information to which they have access; and c. all users have a valid need-to-know only for information to which they have access. NSTISSI 4009 &text636=Provides functionality for PC based systems.SABI &text637=Concept of processing information with different classifications and categories that simultaneously permits access by users with different security clearances and denies access to users who lack authorization. NSTISSI 4009 &text638=Condition in which two IS's need to rely upon each other to perform a service yet neither trusts the other to properly protect shared data. NSTISSI 4009 &text639=National COMSEC Advisory Memorandum &text640=National COMSEC Instruction &text641=National COMSEC Information Memorandum &text642=Negative Acknowledge &text643=Information that has been determined pursuant to Executive Order 12958 or any predecessor order to require protection against unauthorized disclosure. NSTISSI 4009 &text644=Any telecommunications or information system operated by the US Government the function operation or use of which: 1. involves intelligence activities; 2. involves cryptologic activities related to national security; 3. involves command and control of military forces; 4. involves equipment that is an intregal part of a weapon or weapon system; or 5. is critical to the direct fulfillment of military or intelligence missions and does not include a system that is to be used for routine administrative and business applications (including payroll finance logistics and personnel management applications). (Title 40 U.S.C. Section 1452 Information Technology Management Reform Act of 1996.)NSTISSI 4009 &text645=North Atlantic Treaty Organization &text646=Nuclear Command and Control Document &text647=National Computer Security Center &text648=Non-Developmental Item &text649=The necessity for access to or knowledge or possession of specific information required to carry out official duties. NSTISSI 4009 &text650=IS implemented with a collection of interconnected network nodes. NSTISSI 4009 &text651=Device implementing protocols that allow attachment of a computer system to a network. NSTISSI 4009 &text652=Access control concept referring to an abstract machine that mediates all access to objects within a network by subjects within the network. See reference monitor. NSTISSI 4009 &text653=The protection of networks and their services from unauthorized modification destruction or disclosure. It provides assurance the network performs its critical functions correctly and there are no harmful side-effects. NSTISSI 4009 &text654=Subset of network architecture specifically addressing security-relevant issues. NSTISSI 4009 &text655=Individual designated to assure network security. See Information System Security Officer. NSTISSI 4009 &text656=Individual or organization responsible for stating the security policy enforced by the network designing the network security architecture to properly enforce that policy and ensuring the network is implemented in such a way that the policy is enforced. For commercial-off-the-shelf systems (COTS) the network sponsor will normally be the vendor. For a fielded network system the sponsor will normally be the project manager or system administrator. NSTISSI 4009 &text657=System implemented with a collection of interconnected components. A network system is based on a coherent security architecture and design. NSTISSI 4009 &text658=Totality of protection mechanisms within a network including hardware firmware and software the combination of which is responsible for enforcing a security policy. See trusted computing base. NSTISSI 4009 &text659=Totality of mechanisms within a single network component for enforcing the network policy as allocated to that component; the part of the NTCB within a single network component. NSTISSI 4009 &text660=Penetration technique in which different communication networks are linked to access an IS to avoid detection and trace-back. NSTISSI 4009 &text661=National Information Infrastructure &text662=National Imagery and Mapping Agency &text663=Not Classified Internet Protocol Router Network &text664=National Industrial Security Advisory Committee &text665=National Institute of Standards and Technology &text666=Nonkernel Security Related &text667=N-Level Workstation &text668=No-Lone Zone &text669=No Foreign Dissemination &text670=Area room or space that when staffed must be occupied by two or more appropriately cleared individuals who remain within sight of each other. See-two-person integrity. NSTISSI 4009 &text671=Synonymous with automatic remote rekeying. NSTISSI 4009 &text672=Assurance the sender of data is provided with proof of delivery and the recipient is provided with proof of the sender's identity so neither can later deny having processed the data. NSTISSI 4009 &text673=Synonymous with Public Key Cryptography. NSTISSI 4009 &text674=National Security Agency &text675=Network Security Architecture and Design &text676=National Security Directive &text677=National Security Decision Directive &text678=National Security Emergency Preparedness &text679=Network Security Framework &text680=National Security Information &text681=National Security Telecommunications Advisory Committee &text682=National Security Telecommunications and Information Systems Security Advisory/Information Memorandum &text683=National Security Telecommunications and Information Systems Security Directive &text684=National Security Telecommunications And Information Systems Security Instruction &text685=National Security Telecommunications and Information Systems Security Policy &text686=Network Trusted Computing Base &text687=National Telecommunications and Information Administration &text688=National Telecommunications and Information Systems Security Advisory/Information Memorandum &text689=National Telecommunications and Information Systems Security Council &text690=Dummy letter letter symbol or code group inserted into an encrypted message to delay or prevent its decryption or to complete encrypted groups for transmission or transmission security purposes. NSTISSI 4009 &text691=Operations and Maintenance &text692=Originating Agency's Determination Required &text693=Passive entity that contains or receives information. Access to an object implies access to the information it contains. NSTISSI 4009 &text694=Reassignment and re-use of a storage medium containing one or more objects after ensuring no residual data remains on the storage medium. NSTISSI 4009 &text695=Cryptosystem in which encryption and decryption are performed independently of the transmission and reception functions. NSTISSI 4009 &text696=Office of Management and Budget &text697=Operations and Maintenance Responsibility Transfer &text698=Code in which plain text elements and their accompanying code groups are arranged in alphabetical numerical or other systematic order so one listing serves for both encoding and decoding. One-part codes are normally small codes used to pass small volumes of low-sensitivity information. NSTISSI 4009 &text699=Cryptosystem employing key used only once. NSTISSI 4009 &text700=Manual one-time cryptosystem produced in pad form. NSTISSI 4009 &text701=Punched paper tape used to provide key streams on a one-time basis in certain machine cryptosystems. NSTISSI 4009 &text702=Cryptosystem in which encryption and decryption are performed in association with the transmitting and receiving functions. NSTISSI 4009 &text703=Operations Code &text704=Environment that does not provide sufficient assurance that applications and equipment are protected against the loss of confidentiality integrity or availability. NSTISSI 4009 &text705=Storage of classified information within an accredited facility but not in General Services Administration approved secure containers while the facility is unoccupied by authorized personnel. NSTISSI 4009 &text706=Protection of data from either accidental or unauthorized intentional modification destruction or disclosure during input processing storage transmission or output operations. NSTISSI 4009 &text707=Key intended for use over-the-air for protection of operational information or for the production or secure electrical transmission of key streams. NSTISSI 4009 &text708=Authority for continued use of unmodified COMSEC end-items pending the completion of a mandatory modification. NSTISSI 4009 &text709=Code composed largely of words and phrases suitable for general communications use. NSTISSI 4009 &text710=Process denying information to potential adversaries about capabilities and/or intentions by identifying controlling and protecting unclassified generic activities. NSTISSI 4009 &text711=Operations Security &text712=NSA-approved modification not required for universal implementation by all holders of a COMSEC end-item. This class of modification requires all of the engineering/doctrinal control of mandatory modification but is usually not related to security safety TEMPEST or reliability. NSTISSI 4009 &text713=Organizational Registration Authority &text714=The DoD Trusted Computer System Evaluation Criteria (DoD 5200.28-STD). NSTISSI 4009 &text715=Operations Requirements Document &text716=Limited maintenance performed by a user organization. NSTISSI 4009 &text717=Entity within the PKI that authenticates the identity and the organizational affiliation of the users. NSTISSI 4009 &text718=Office of Secretary of Defense &text719=Operational Test and Evaluation &text720=Over-the-Air Key Distribution &text721=Over-the-Air Rekeying &text722=Over-the-Air Transfer &text723=One-Time Pad &text724=One-Time Tape &text725=Communications path within a computer system or network designed for the authorized transfer of data. See covert channel. NSTISSI 4009 &text726=Providing electronic key via over-the-air rekeying over-the-air key transfer or cooperative key generation. NSTISSI 4009 &text727=Electronically distributing key without changing traffic encryption key used on the secured communications path over which the transfer is accomplished. NSTISSI 4009 &text728=Changing traffic encryption key or transmission security key in remote crypto-equipment by sending new key directly to the remote crypto-equipment over the communications path it secures. NSTISSI 4009 &text729=Process of writing patterns of data on top of the data stored on a magnetic medium. NSTISSI 4009 &text730=Preproduction Model &text731=Policy Approving Authority &text732=Peer Access Approval &text733=Type of firewall in which each packet is examined and either allowed to pass through or is rejected based on local security policy. NSTISSI 4009 &text734=Peer Access Enforcement &text735=Permissive Action link &text736=Bit(s) used to determine whether a block of data has been altered. NSTISSI 4009 &text737=IS security mode of operation wherein all personnel have the clearance but not necessarily formal access approval and need-to-know for all information handled by an IS. NSTISSI 4009 &text738=Sequence of characters longer than the acceptable length of a password that is transformed by a password system into a virtual password of acceptable length. NSTISSI 4009 &text739=Protected/private alphanumeric string used to authenticate an identity or to authorize access to data. NSTISSI 4009 &text740=Personal Computer &text741=Policy Creation Authority &text742=Personal Computer Memory Card International Association &text743=Protected Communications Zone &text744=Preliminary Design Review &text745=1. Protected Distribution Systems 2. Practices Dangerous to Security &text746=Protocol Data Unit &text747=Unauthorized act of bypassing the security mechanisms of a system. NSTISSI 4009 &text748=Security testing in which evaluators attempt to circumvent the security features of a system based on their understanding of the system design and implementation. NSTISSI 4009 &text749=Unique traffic encryption key generated automatically by certain secure telecommunications systems to secure single voice or data transmissions. See cooperative key generation. NSTISSI 4009 &text750=Processing of various levels of classified and unclassified information at distinctly different times. Under the concept of periods processing the system must be purged of all information from one processing period before transitioning to the next. NSTISSI 4009 &text751=Device used in crypto-equipment to change the order in which the contents of a shift register are used in various nonlinear combining circuits. NSTISSI 4009 &text752=Positive Enable System &text753=Public Key Algorithm &text754=Public Key Cryptography &text755=Public Key Infrastructure &text756=Programmable Key Storage Device &text757=Unencrypted information. NSTISSI 4009 &text758=Post-Nuclear Event Key &text759=Point of Contact &text760=First Level of the PKI Certification Management Authority that approves the security policy of each PCA. NSTISSI 4009 &text761=Second level of the PKI Certification Management Authority that formulates the security policy under which it and its subordinate CAs will issue public key certificates. Also known as a policy certification authority. NSTISSI 4009 &text762=Generic term referring to a sealed authenticator system permissive action link coded switch system positive enable system or nuclear command and control documents material or devices. NSTISSI 4009 &text763=Preferred Products List (a section in the INFOSEC Products and Services Catalogue) &text764=Partition Rule Base Access Control &text765=Version of INFOSEC equipment employing standard parts and suitable for complete evaluation of form design and performance. Preproduction models are often referred to as beta models. NSTISSI 4009 &text766=Eliminating the display of characters in order to preserve their secrecy. NSTISSI 4009 &text767=Commercial encryption system that affords telecommunications limited protection to deter a casual listener but cannot withstand a technically competent cryptanalytic attack. NSTISSI 4009 &text768=Encryption methodology in which the encryptor and decryptor use the same key which must be kept secret. NSTISSI 4009 &text769=Explicitly authorized access of a specific user process or computer to a computer resource(s). NSTISSI 4009 &text770=Attempt to gather information about an IS or its users. NSTISSI 4009 &text771=INFOSEC equipment in its final mechanical and electrical form. NSTISSI 4009 &text772=Programmable Read-Only Memory &text773=Proprietary Information &text774=Material and information relating to or associated with a company's products business or activities including but not limited to: financial information; data or statements; trade secrets; product research and development; existing and future product designs and performance specification; marketing plans or techniques; schematics; client lists computer programs processes and know-how that have been clearly identified and properly marked by the company as proprietary information trade secrets or company confidential information. The information must have been developed by the company and not be available to the government or to the public without restriction from another source. NSTISSI 4009 &text775=Set of rules and formats semantic syntactic permitting ISs to exchange information. NSTISSI 4009 &text776=Telecommunications deriving their protection through use of type 2 products or data encryption standard equipment. See type 2 product. NSTISSI 4009 &text777=Wire line or fiber optic distribution system used to transmit unencrypted classified national security information through an area of lesser classification or control. NSTISSI 4009 &text778=Informal description of the overall design of an IS delineating each of the protection mechanisms employed. Combination of formal and informal techniques appropriate to the evaluation class used to show the mechanisms are adequate to enforce the security policy. NSTISSI 4009 &text779=One of a hierarchy of privileged modes of an IS that gives certain access rights to user programs and processes that are authorized to operate in a given mode. NSTISSI 4009 &text780=Packaging techniques for COMSEC material that discourage penetration reveal a penetration has occured or was attempted or inhibit viewing or copying of keying material prior to the time it is exposed for use. NSTISSI 4009 &text781=Special tamper-evident features and materials employed for the purpose of detecting tampering and deterring attempts to compromise modify penetrate extract or substitute information processing equipment and keying material. NSTISSI 4009 &text782=Application acting on behalf of another application or system in responding to protocol requests. NSTISSI 4009 &text783=Protected Services List &text784=Body of cryptographic and related knowledge study techniques and applications that is or intended to be in the public domain. NSTISSI 4009 &text785=Contains the name of a user the public key component of the user and the name of the issuer who vouches that the public key component is bound to the named user. NSTISSI 4009 &text786=Encryption system using a linked pair of keys. What one pair of keys encrypts the other pair decrypts. NSTISSI 4009 &text787=Framework established to issue maintain and revoke public key certificates accomodating a variety of security technologies including the use of software. NSTISSI 4009 &text788=Rendering stored information unrecoverable by laboratory attack. NSTISSI 4009 &text789=Protected Wireline Distribution System &text790=Short name referring to technology that provides tamper-resistant protection to crypto-equipment. NSTISSI 4009 &text791=Research and Development &text792=Risk Assessment &text793=Rapid Automatic Cryptographic Equipment &text794=Provides a highly fixed formatted releasable low message text between high and low networks. This solution is appropriate for very specific applications where fixed format messages are used.SABI &text795=Set of publications that interpret Orange Book requirements for trusted systems. NSTISSI 4009 &text796=Rating Maintenance Program &text797=Analog or digital source of unpredictable unbiased and usually independent bits. Randomizers can be used for several different functions including key generation or to provide a starting state for a key generator. NSTISSI 4009 &text798=Remote Access Security Program &text799=Request Champion &text800=Research Development Test and Evaluation &text801=Fundamental operation in an IS that results only in the flow of information from an object to a subject. NSTISSI 4009 &text802=Permission to read information in an IS. NSTISSI 4009 &text803=Immediate response to a penetration attempt that is detected and diagnosed in time to prevent access. NSTISSI 4009 &text804=Actions necessary to restore data files of an IS and computational capability after a system failure. NSTISSI 4009 &text805=Designation applied to information systems and associated areas circuits components and equipment in which national security information is being processed. NSTISSI 4009 &text806=Any electronic emission (e.g. plain text key key stream subkey stream initial fill or control signal) that would divulge national security information if recovered. NSTISSI 4009 &text807=Separation of electrical and electronic circuits components equipment and systems that handle national secuirty information (RED) in electrical form from those that handle non-national security information (BLACK) in the same form. NSTISSI 4009 &text808=Access control concept referring to an abstract machine that mediates all accesses to objects by subjects. NSTISSI 4009 &text809=Portion of a trusted computing base whose normal function is to control access between subjects and objects and whose correct operation is essential to the protection of data in the system. NSTISSI 4009 &text810=Prefix appended to the short title of U.S.-produced keying material to indicate its foreign releasability. A designates material that is releasable to specific allied nations and US designates material intended exclusively for U.S. use. NSTISSI 4009 &text811=Residual information remaining on storage media after clearing. See magnetic remanence and clearing. NSTISSI 4009 &text812=Procedure by which a distant crypto-equipment is rekeyed electrically. See automatic remote rekeying and manual remote rekeying. NSTISSI 4009 &text813=NSA-approved change to a COMSEC end-item that does not affect the original characteristics of the end-item and is provided for optional application by holders. Repair actions are limited to minor electrical and/or mechanical improvements to enhance operation maintenance or reliability. They do not require an identification label marking or control but must be fully documented by changes to the maintenance manual. NSTISSI 4009 &text814=Key held to satisfy unplanned needs. See contigency key. NSTISSI 4009 &text815=Portion of risk remaining after security measures have been applied. NSTISSI 4009 &text816=Data left in storage after information processing operations are complete but before deguassing or overwriting has taken place. NSTISSI 4009 &text817=Method by which the reference monitor mediates accesses to an IS resource. Resource is protected and not directly accessible by a subject. Satisfies requirement for accurate auditing of resource usage. NSTISSI 4009 &text818=Synonymous with risk assessmentNSTISSI 4009 &text819=Process of analyzing threats to and vulnerabilities of an IS and the potential impact the loss of information or capabilities of a system would have on national security. The resulting analysis is used as a basis for identifying appropriate and cost-effective counter-measures. NSTISSI 4009 &text820=Difference between the minimum clearance or authorization of IS users and the maximum sensitivity (e.g. classification and categories) of data processed by the system. NSTISSI 4009 &text821=Process concerned with the identification measurement control and minimization of security risks in information systems to a level commensurate with the value of the assets protected. NSTISSI 4009 &text822=Radiant Mercury SABI &text823=Reliability Qualification Tests &text824=Secret &text825=System Administrator &text826=Secret and Below Interoperability &text827=Statement affixed to a computer output or printout that states the highest classification being processed at the time the product was produced and requires control of the product at that level until determination of the true classification by an authorized person. Synonymous with banner. NSTISSI 4009 &text828=Key intended for off-the-air demonstration use only. NSTISSI 4009 &text829=Process to remove information from media such that data recovery is not possible. It includes removing all classified labels markings and activity logs. NSTISSI 4009 &text830=Special Access Office &text831=1. System Acquisition Plan 2. Special Access Program &text832=Special Access Required &text833=SAVILLE Advanced Remote KeyingNSTISSI 4009 &text834=Security Awareness Training and Education &text835=Sensitive But Unclassified Information - The designation applied only to information or material the loss misuse or unauthorized access to or modification of could adversely affect the national interest or the conduct of Federal programs or the privacy to which individuals are entitled under Section 552a of Title 5 U. S. Code but has not been specifically authorized under criteria established by an Executive Order or an act of Congress to be kept classified in the interest of national defense or foreign policy. &text836=Searching through object residue to acquire data. NSTISSI 4009 &text837=Sensitive Compartmented Information - Includes only that intelligence material having special controls indicating restrictive handling for which systems of compartmentation of handling are formally established. &text838=Sensitive Compartmented Information Facility &text839=Temporary key storage in crypto-equipment. NSTISSI 4009 &text840=Secure Digital Net Radio Interface Unit &text841=Secure Data Network System &text842=System Design Review &text843=Systems Engineering\Configuration Management &text844=An ASD (C3I) directed JCS sponsored NSA/DISA executed program to ensure within acceptable risk the integrity of the Defense Information Infrastructure.SABI &text845=Telecommunications deriving security through use of type1 products and/or protected distribution systems. NSTISSI 4009 &text846=Specification for a secure hash algorithm that can generate a condensed message representation called a message digest. NSTISSI 4009 &text847=Provides releasable below secret or low e-mail to move between secret and below or high and low networks.SABI &text848=Resident software controlling hardware and other software functions in an IS to provide a level of protection or security appropriate to the classification sensitivity and/or criticality of the data and resources it manages. NSTISSI 4009 &text849=Condition in which no subject can access any object in an unauthorized manner. NSTISSI 4009 &text850=Subsystem containing its own implementation of the reference monitor concept for those resources it controls. Secure subsystem must depend on other controls and the base operating system for the control of subjects and the more primitive system objects. NSTISSI 4009 &text851=Assessment usually performed on IS hardware to determine the security properties of a device when hardware fault is encountered. NSTISSI 4009 &text852=Guide or manual explaining how the security mechanisms in a specific system work. NSTISSI 4009 &text853=IS trusted subsystem that enforces security policy on the data passing through it. NSTISSI 4009 &text854=Error of commission or omission in an IS that may allow protection mechanisms to be bypassed. NSTISSI 4009 &text855=Examination of an IS to determine compliance with security policy procedures and practices. NSTISSI 4009 &text856=Hardware firmware and software elements of a trusted computing base implementing the reference monitor concept. Security kernel must mediate all accesses be protected from modification and be verifiable as correct. NSTISSI 4009 &text857=Information representing the sensitivity of a subject or object such as its hierarchical classification (CONFIDENTIAL SECRET TOP SECRET) together with any applicable nonhierarchical security categories (e.g. sensitive compartmented information critical nuclear weapon design information). NSTISSI 4009 &text858=Management system overseeing and controlling implementation of network security policy. NSTISSI 4009 &text859=All components/devices of an IS to be accredited. Separately accredited components generally are not included within the perimeter. NSTISSI 4009 &text860=Highest and lowest security levels that are permitted in or on an IS system component subsystem or network. NSTISSI 4009 &text861=Types and levels of protection necessary for equipment data information applications and facilities to meet security policy. NSTISSI 4009 &text862=Description of the minimum requirements necessary for an IS to maintain an acceptable level of security. NSTISSI 4009 &text863=Protective measures and controls prescribed to meet the security requirements specified for an IS. Safeguards may include security features management constraints personnel security and security of physical structures areas and devices. See accreditation. NSTISSI 4009 &text864=Detailed description of the safeguards required to protect an IS. NSTISSI 4009 &text865=Examination and analysis of the safeguards required to protect an IS as they have been applied in an operational environment to determine the security posture of that system. NSTISSI 4009 &text866=Process to determine that an IS protects data and maintains functionally as intended. NSTISSI 4009 &text867=Initial key used to start an updating or key generation process. NSTISSI 4009 &text868=Implicit authentication to a predetermined level of all transmissions on a secure communications system. NSTISSI 4009 &text869=Information the loss misuse or unauthorized access to modification of which would adversely affect the national interest or the conduct of federal programs or the privacy to which individuals are entitled under 5 U.S.C. Section 552a (the Privacy Act) but that has not been specifically authorized under criteria established by an Executive Order or an Act of Congress to be kept secret in the interest of the national defense or foreign policy. (Systems that are not national security systems but contain sensitive information are to be protected in accordance with the requirements of the Computer Security Act of 1987 (P.L. 100-235).)NSTISSI 4009 &text870=Information representing elements of the security label(s) of a subject and an object. Sensitivity labels are used by the trusted computing base (TCB) as the basis for mandatory access control decisions. NSTISSI 4009 &text871=Systems Engineering Testing and Analysis &text872=Security Fault Analysis &text873=Security Features Users Guide &text874=Secure Hash Algorithm &text875=Room or container designed to attenuate electromagnetic radiation. NSTISSI 4009 &text876=Identifying combination of letters and numbers assigned to certain COMSEC materials to facilitate handling accounting and controlling. NSTISSI 4009 &text877=Special Intelligence &text878=Generic term encompassing COMSEC and electronic security. NSTISSI 4009 &text879=Signals Security &text880=Bell-La Padula security model rule allowing a subject read access to an object only if the security level of the subject dominates the security level of the object. NSTISSI 4009 &text881=Means of distributing key to multiple local crypto-equipment or devices from a single fill point. NSTISSI 4009 &text882=IS device not trusted to properly maintain and separate data to different security levels. NSTISSI 4009 &text883=Secret Internet Protocol Router Network &text884=Subcommittee on Information Systems Security &text885=Standard Mail Guard &text886=Secure Mobile Unit &text887=Software tool that audits and identifies network traffic packets. NSTISSI 4009 &text888=Secure Network ServerSABI &text889=Process that plans develops and documents the quantitative demonstration of the fulfillment of all baseline functional performance operational and interface requirements. NSTISSI 4009 &text890=Statement of Work &text891=Mandatory or optional modification that applies only to a specific mission purpose operational or environmental need. NSTISSI 4009 &text892=Techniques using fixed sequence permutations or voice/speech inversion to render speech unintelligible to the casual listener. NSTISSI 4009 &text893=Single Point Key(ing) &text894=Separation of data or information into two or more parts each part constantly kept under control of separate authorized individuals or teams so that no one individual or team will know the whole data. NSTISSI 4009 &text895=System Program Office &text896=Unauthorized use of legitimate Identification and Authentication (I&A) data however it was obtained to mimick a subject different from the attacker. Impersonating masquerading piggybacking and mimicking are forms of spoofing. NSTISSI 4009 &text897=Telecommunications techniques in which a signal is transmitted in a bandwidth considerably greater than the frequency content of the original information. Frequency hopping direct sequence spreading time scrambling and combinations of these techniques are forms of spread spectrum. NSTISSI 4009 &text898=Scratch Pad Store &text899=SABI Referenced ImplementationsSABI &text900=SABI Referenced ImplementationsSABI &text901=Security Requirements Review &text902=System Security Authorization AgreementSABI &text903=System Security Engineer &text904=System Security Engineering SupportSABI &text905=System Security Management Plan &text906=Systems Security Officer &text907=System Security Requirements Specification &text908=Security Test and Evaluation &text909=Bell-La Padula security model rule allowing a subject write access to an object only if the security level of the object dominates the security level of the subject. NSTISSI 4009 &text910=Key-encryption-key held in common by a group of potential communicating entities and used to establish ad hoc tactical networks. NSTISSI 4009 &text911=Variable representing either the state of an IS or the state of some system resource. NSTISSI 4009 &text912=Secure Terminal Equipment &text913=An object supporting both read and write accesses to an IS. NSTISSI 4009 &text914=Subcommittee on Telecommunications Security &text915=Secure Telephone Unit &text916=Major subdivision of an assembly consisting of a package of parts elements and circuits that perform a specific function. NSTISSI 4009 &text917=Generally a person process or device causing information to flow among objects or changes the system state. NSTISSI 4009 &text918=Sensitivity label(s) of the objects to which the subject has both read and write access. Security level of a subject must always be dominated by the clearance level of the user associated with the subject. NSTISSI 4009 &text919=Individual with primary responsibility for managing the distinguished name process. NSTISSI 4009 &text920=Process of encrypting encrypted information. Occurs when a message encrypted off-line is transmitted over a secured on-line circuit or when information encrypted by the originator is multiplexed onto a communications trunk which is then bulk encrypted. NSTISSI 4009 &text921=Scheduled or unscheduled replacement of a COMSEC aid with a different edition. NSTISSI 4009 &text922=Special user who can perform control of processes devices networks and file systems. NSTISSI 4009 &text923=Synonymous with executive state of an operating system. NSTISSI 4009 &text924=Action procedure modification or device that reduces the level of or inhibits the generation of compromising emanations in an IS. NSTISSI 4009 &text925=See discretionary access control. NSTISSI 4009 &text926=List of individual letters combination of letters or syllables with their equivalent code groups used for spelling out words or proper names not present in the vocabulary of a code. A syllabary may also be a spelling table. NSTISSI 4009 &text927=Method of on-line crypto-operation in which crypto-equipment and associated terminals have timing systems to keep them in step. NSTISSI 4009 &text928=Individual responsible for the installation and maintenance of the nonsecurity aspects of an information system providing effective IS utilization adequate security parameters and sound implementation of established INFOSEC policy and procedures. NSTISSI 4009 &text929=Any software hardware data administrative physical communications or personnel resource within an IS. NSTISSI 4009 &text930=Methodologies developed through software engineering to manage the complexity of system development. Development methodologies include software engineering aids and high-level design analysis tools. NSTISSI 4009 &text931=Highest security level supported by an IS. NSTISSI 4009 &text932=IS security mode of operation wherein each user with direct or indirect access to the IS its peripherals remote terminals or remote hosts has all of the following: a. valid security clearance for all information within an IS; b. formal access approval and signed nondisclosure agreements for all the information stored and/or processed (including all compartments subcompartments and/or special access programs); and c. valid need-to-know for some of the information contained within the IS. NSTISSI 4009 &text933=Symbol or group of symbols in an off-line encrypted message identifying the specific cryptosystem or key used in the encryption. NSTISSI 4009 &text934=Attribute of an IS when it performs its intended function in an unimpaired manner free from deliberate or inadvertent unauthorized manipulation of the system. NSTISSI 4009 &text935=Lowest security level supported by an IS. NSTISSI 4009 &text936=Detailed security description of the physical structure equipment component location relationship and general operating environment of an IS. NSTISSI 4009 &text937=Degree of security as determined by evaluation of the totality of all system elements and INFOSEC countermeasures. NSTISSI 4009 &text938=The first step in the formal SABI process. The SSAA is the centerpiece of the required documentation effort.SABI &text939=The effort to achieve and maintain optimal security and survivability of a system throughout its life cycle. NSTISSI 4009 &text940=Risk Assessment of a system considering its vulnerabilities and perceived security threat. NSTISSI 4009 &text941=Formal document fully describing the responsibilities for security tasks planned to meet system security requirements. NSTISSI 4009 &text942=Synonymous with information system security officer. NSTISSI 4009 &text943=Formal document fully describing the planned security tasks required to meet system security requirements. NSTISSI 4009 &text944=Traffic Analysis &text945=Tactical Trunk Encryption Device &text946=Tactical Terminal &text947=Technical Architecture Framework for Information Management &text948=TEMPEST Advisory Group &text949=Telecommunications and Automated Information Systems Security &text950=Unauthorized modification altering the proper functioning of INFOSEC equipment. NSTISSI 4009 &text951=Team Chief &text952=Trusted Computing Base &text953=Time Compliance Data &text954=DoD Trusted Computer System Evaluation Criteria &text955=Transfer Device &text956=Attack that can be perpetrated by circumventing or nullifying hardware or software protection mechanisms rather than by subverting system personnel or other users. NSTISSI 4009 &text957=Trunk Encryption Device &text958=Traffic Encryption Key &text959=Preparation transmission communication or related processing of information (writing images sounds or other data) by electrical electromagnetic electromechanical electro-optical or electronic means. NSTISSI 4009 &text960=Superceded by information systems security. NSTISSI 4009 &text961=See information systems security. NSTISSI 4009 &text962=Test and Evaluation Master Plan &text963=Short name referring to investigation study and control of compromising emanations from IS equipment. NSTISSI 4009 &text964=Laboratory or on-site test to determine the nature of compromising emanations associated with an IS. NSTISSI 4009 &text965=Designated area within a facility where equipment with appropriate TEMPEST characteristics (TEMPEST zone assignment) may be operated. NSTISSI 4009 &text966=TEMPEST Endorsement Program &text967=Key intended for testing of COMSEC equipment or systems. NSTISSI 4009 &text968=Trusted Facility Manual &text969=Traffic Flow Security &text970=Any circumstance or event with the potential to harm an IS through unauthorized access destruction disclosure modification of data and/or denial of service. NSTISSI 4009 &text971=Examination of information to identify the elements comprising a threat. NSTISSI 4009 &text972=Formal description and evaluation of threat to an IS. NSTISSI 4009 &text973=Analysis assessment and review of audit trails and other information collected for the purpose of searching out system events that may constitute violations of system security. NSTISSI 4009 &text974=Computer protection system in which each subject maintains a list of unforgeable bit patterns called tickets one for each object a subject is authorized to access. See list-oriented. NSTISSI 4009 &text975=Technical Interchange Meeting &text976=Resident computer program that triggers an unauthorized act at a predefined time. NSTISSI 4009 &text977=Date by which a mandatory modification to a COMSEC end-item must be incorporated if the item is to remain approved for operational use. NSTISSI 4009 &text978=Password that is valid only at a certain time of day or during a specified interval of time. NSTISSI 4009 &text979=Top-Level Specification &text980=Trusted Network Interpretation &text981=Trusted Network Interpretation Environment Guideline &text982=Two-Person Control &text983=Trusted Products Evaluation Program &text984=Two-Person Integrity &text985=Program in which NSA acts as the central procurement agency for the development and in some cases the production of INFOSEC items. This includes the Authorized Vendor Program. Modification to the INFOSEC end-items used in products developed and/or produced under these programs must be approved by NSA. NSTISSI 4009 &text986=Study of communications patterns. NSTISSI 4009 &text987=Key used to encrypt plain text or to superencrypt previously encrypted text and/or to decrypt cipher text. NSTISSI 4009 &text988=Generation of spurious communications or data units to disguise the amount of real data units being sent. NSTISSI 4009 &text989=Measure used to conceal the presence of valid messages in an on-line cryptosystem or secure communications system. NSTISSI 4009 &text990=Cryptographic key for training. NSTISSI 4009 &text991=Property whereby the security level of an object cannot change while the object is being processed by an IS. NSTISSI 4009 &text992=Component of communications security that results from the application of measures designed to protect transmissions from interception and exploitation by means other than cryptanalysis. NSTISSI 4009 &text993=Key used in the control of TRANSEC processes such as frequency hopping and spread spectrum. NSTISSI 4009 &text994=Hidden software or hardware mechanism used to circumvent security controls. Synonymous with Back Door. NSTISSI 4009 &text995=Technical Review Board &text996=Tri-Service Tactical Communications System &text997=Program containing hidden code that allows the unauthorized collection falsification or destruction of information. NSTISSI 4009 &text998=IS employing sufficient hardware and software assurance measures to allow simultaneous processing of a range of classified or sensitive information. NSTISSI 4009 &text999=Totality of protection mechanisms within a computer system including hardware firmware and software the combination responsible for enforcing a security policy. NSTISSI 4009 &text1000=Method for distributing trusted computing base (TCB) hardware software and firmware components that protects the TCB from modification during distribution. NSTISSI 4009 &text1001=Administrative procedures roles functions privileges and databases used for secure system configuration administration and operation. NSTISSI 4009 &text1002=Document containing the operational requirements; security environment; hardware and software configurations and interfaces; and all security procedures measures and contingency plans. NSTISSI 4009 &text1003=Identification method used in IS networks whereby the sending host can verify an authorized user on its system is attempting a connection to another host. The sending host transmits the required user authentication information to the receiving host. NSTISSI 4009 &text1004=Mechanism by which a person using a terminal can communicate directly with the trusted computing base (TCB). Trusted path can only be activated by the person or the TCB and cannot be imitated by untrusted software. NSTISSI 4009 &text1005=Process that has privileges to circumvent the system security policy and has been tested and verified to operate only as intended. NSTISSI 4009 &text1006=Ability to ensure recovery without compromise after a system failure. NSTISSI 4009 &text1007=Software portion of a trusted computing base (TCB). NSTISSI 4009 &text1008=Top Secret/Special Compartmented Information &text1009=Technical Surveillance Countermeasures &text1010=System for identifying the type and purpose of certain items of COMSEC material. NSTISSI 4009 &text1011=Transmission Security Key &text1012=Technology enabling one network to send its data via another network's connections. Tunneling works by incapsulating a network protocol within packets carried by the second network. NSTISSI 4009 &text1013=Code consisting of an encoding section in which the vocabulary items (with their associated code groups) are arranged in alphabetical or other systematic order and a decoding section in which the code groups (with their associated meanings) are arranged in a separate alphabetical or numeric order. NSTISSI 4009 &text1014=Continuous surveillance and control of positive control material at all times by a minimum of two authorized individuals each capable of detecting incorrect and unauthorized procedures with respect to the task being performed and each familiar with established security and safety requirements. NSTISSI 4009 &text1015=System of storage and handling designed to prohibit individual access to certain COMSEC keying material by requiring the presence of at least two authorized persons each capable of detecting incorrect or unauthorized security procedures with respect to the task being performed. See no-lone zone. NSTISSI 4009 &text1016=Classified or controlled cryptographic item endorsed by the NSA for securing classified and sensitive US Government Information when appropriately keyed. The term refers only to products and not to information key services or controls. Type 1 products contain classified NSA algorithms. They are available to U.S. Government users their contractors and Federally sponsored non-U.S. government activities subject to export restrictions in accordance with International Traffic in Arms Regulation. NSTISSI 4009 &text1017=Unclassified cryptographic equipment assembly or component endorsed by the NSA for use in national security systems as defined in Title 40 U.S.C. Section 1452. NSTISSI 4009 &text1018=Cryptographic algorithm registered by the National Institute of Standards and Technology (NIST) and published as a Federal Information Processing Standard (FIPS) for use in protecting unclassified sensitive information or commercial information. NSTISSI 4009 &text1019=Unclassified cryptographic algorithm that has been registered by the National Institute of Standards and Technology (NIST) but not published as a Federal Information Processing Standard (FIPS). NSTISSI 4009 &text1020=Unclassified &text1021=United States &text1022=United States citizen or a permanent resident alien an unincorporated association substantially composed of United States citizens or permanent resident aliens or a corporation incorporated in the United States except for a corporation directed and controlled by a foreign government or governments. NSTISSI 4009 &text1023=Base or building to which access is physically controlled by U.S. persons who are authorized U.S. Government or U.S. Government contractor employees. NSTISSI 4009 &text1024=Room or floor within a facility that is not a U.S.-controlled facility access to which is physically controlled by U.S. persons who are authorized U.S. Government or U.S. Government contractor employees. Keys or combinations to locks controlling entrance to U.S.-Controlled spaces must be under the exclusive control of U.S. persons who are U.S. Government or U.S. Government contractor employees. NSTISSI 4009 &text1025=User Agent &text1026=Unique Interswitch Rekeying Key &text1027=User Interface System &text1028=Exposure of information to individuals not authorized to receive it. NSTISSI 4009 &text1029=Information that has not been determined pursuant to Executive Order 12958 or any predecessor order to require protection against unauthorized disclosure and that is not designated as classified. NSTISSI 4009 &text1030=Process that has been evaluated or examined for adherence to the security policy. It may include incorrect or malicious code that attempts to circumvent the security mechanisms. NSTISSI 4009 &text1031=Automatic or manual cryptographic process that irreversibly modifies the state of a COMSEC key equipment device or system. NSTISSI 4009 &text1032=User Partnership Program &text1033=Undesired Signal Data Emanations &text1034=Person or process authorized to access an IS. (PKI) Individual defined registered and bound to a public key structure by a certification authority (CA). NSTISSI 4009 &text1035=Unique symbol or character string used by an IS to identify a specific user. NSTISSI 4009 &text1036=Partnership between the NSA and a U.S. Government agency to facilitate development of secure IS equipment incorporating NSA approved cryptography. The result of this program is the authorization of the product or system to safeguard national security information in the user's specific application. NSTISSI 4009 &text1037=Patterns of a user's activity that can show changes from normal behavior. NSTISSI 4009 &text1038=Person authorized by an organization to order COMSEC keying material and interface with the keying system; providing information to key users and ensuring the correct type of key is ordered. NSTISSI 4009 &text1039=Advanced Development Model &text1040=Process of applying specialized security test and evaluation procedures tools and equipment needed to establish acceptance for joint usage of an IS by one or more departments or agencies and their contractors. NSTISSI 4009 &text1041=Vulnerability Assessment Process &text1042=One of two or more code symbols having the same plain text equivalent. NSTISSI 4009 &text1043=Vulnerabilities Countermeasures GuideSABI &text1044=Process of comparing two levels of an IS specification for proper correspondence (e.g. security policy model with top-level specification top-level specification with source code or source code with object code). NSTISSI 4009 &text1045=Computer protection class in which formal security verification methods are used to assure mandatory and discretionary security controls can effectively protect classified and sensitive information stored in or processed by the system. Class A1 system is verified design. NSTISSI 4009 &text1046=IS password computed from a passphrase meeting the requirements of password storage (e.g. 64 bits). NSTISSI 4009 &text1047=Protected IS &text utilizing tunneling security controls (see information assurance) and end-point address translation giving the user the impression a dedicated line exists between nodes. NSTISSI 4009 &text1048=Self replicating malicious program segment that attaches itself to an application program or other executable system component and leaves no obvious signs of its presence. NSTISSI 4009 &text1049=VINSON Trunk Terminal &text1050=Virtual Private Network &text1051=VINSON Subscriber Terninal &text1052=Weakness in an IS system security procedures internal controls or implentation that could be exploited. NSTISSI 4009 &text1053=Systematic examination of an IS or product to determine the adequacy of security measures identify security proficiencies provide data from which to predict the effectiveness of proposed security measures and confirm the adequacy of such measures after implementation. NSTISSI 4009 &text1054=Wide Area Network &text1055=Working Group &text1056=Estimate of the effort or time needed by a potential perpetrator with specified expertise and resources to overcome a protective measure. NSTISSI 4009 &text1057=Independent program that replicates from machine to machine across network connections often clogging networks and computer systems as it spreads. NSTISSI 4009 &text1058=Fundamental operation in an IS that results only in the flow of information from a subject to an object. See access type. NSTISSI 4009 &text1059=Permission to write to an object in an IS. NSTISSI 4009 &text1060=Worldwide Military Command and Control System &text1061=Experimental Development Model/Exploratory Development Model. &text1062=To fill unused storage locations in an IS with the representation of the character denoting 0. NSTISSI 4009 &text1063=To remove or eliminate the key from a crypto-equipment or fill device. NSTISSI 4009 &text1064=Synonymous with inspectable space. NSTISSI 4009