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WHATSNEW.02B
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1995-07-09
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July, 1995
Product upgrade, 6.02B
----------------------
Online backup of IVB signatures. Existing IVB signatures was usually
overwritten every time a new signatures file was created. From this
version, the existing IVB signature is backed up before a new one is
written, by renaming the existing file with the extension *.000, and by
changing it's attributes to 'read only'. The back up is done when IVB
renews a signature, because it found new files in a directory, or
because of tampering with one of the signatures (or more) in the
existing file. The back up signature can be used with the /X switch
(user defined filename). No backup is created when new signatures are
purposely rewritten.
Improvement in IVX: A new feature was added to IVX, enabling the
selection of the offset past the entry point, to look for the
extraction of a signature string. This option improves IVX capability
as an automatic signature extractor. Look in Appendix C, in IV's
manual for details how to use this feature.
IDE hardware access fix. InVircible uses hardware access to overcome
stealth boot viruses. IV's hardware access is usually well behaved, yet
there are controllers and 32 bit access drivers with which IV had
problems. This is taken care of by timing out the hardware access if
unsuccessful. If timed out, then SeeThru will not be available with the
specific hardware or driver. This will be indicated in IVinit, IVtest
and in ResQdisk. Usually, the unavailability of SeeThru on 32 bit
hardware should not constitute a problem, as boot virus stealth is
disabled when 32 bit disk access is present and these viruses are then
detected by other IV features, i.e sector analysis and memory stealing.
IVB signatures random names. The installation of IV from a file server
automatically selects a random name for the signatures files. The
random file names contain high ASCII characters that cannot be handled
by direct typing through the keyboard. The odd names were difficult to
handle under DOS. The random filename are retained in this version, yet
somewhat less fancy. The three first characters of the random filenames
are conventional ASCII characters (letter from A to Z or digits from 0
to 9). The other characters are in the range of ASCII 128 to 154,
usually used as the second set for the national languages.
The randomly named files can now be handled with DOS wildcards (*,?),
and the slightly unorthodox naming will prevent inadvertent erasing or
mismanipulations of the signature' files.
Installation to SUBSTituded or remote drives. When installing IV from
the server to a workstation, IVlogin will check that the C: drive is
a local, non-SUBSTituded drive. The network's administrator is advised
to verify that C: is not an ASSIGNed drive at the time of installation.
It's important that the logical C: drive is the same as the physical
first hard drive, when installing IV. The remapping of the volume names
can be done later in the login script.
Improvements in FixBoot. The FixBoot utility was added to IV since
version 6.02. It's purpose is to clean the boot sector of floppies in
bulk processing, by the replacement of the boot sector. The new
additions to FixBoot are: a prompt to process another floppy, and the
detection of which operating system is present on the diskette, to keep
it bootable. The default boot sector is MS-DOS. An IBM boot sector
(PC-DOS/DR-DOS) will be installed instead, if IBM system files are
found on the floppy.
ResQdisk Professional. ResQpro is an extremely powerful tool for
recovering lost hard drives and its professional version, ResQpro, has
already saved users thousands of dollars, by recovering data that was
considered total loss. The ResQpro features are now available in
ResQdisk, to users that purchase the professional license. The Pro
version is recommended to data recovery specialists, computer servicing
labs, to institutions and organizations, and to power users with
special needs for data recovery. The Pro version license is available
through a special distribution floppy only, available from authorized
IV vendors. ResQpro upgrades are identical to IV's, via the Internet
and the major nets.
ResQdisk single session authorization. ResQdisk can restore access to a
hard drive, on condition that the cause is not a hardware failure. Yet
the full advanced features of ResQdisk and ResQpro are available only
to licensed users of IV. The new version enables an authorized dealer
of IV to authorize ResQdisk over the phone, for the present session.
The authorization is done through the exchange of a password pair
(press ^F10 when running ResQdisk to generate the password), while in
a hotline support session.
Handling the boot sector through DOS - new feature in ResQdisk. There
are instances when the active partition's boot sector needs to be
addressed through DOS instead of interrupt 13h. Such is the case when
special boot drivers are used such as Disk Manager or EZ-Drive. The
edit functions (^E) of ResQdisk were duplicated under the ^B (boot)
command. The active boot sector of drive C: is then handled through DOS
interrupts 25h (read) and 26h (write). Note that the designation under
DOS is the logical drive C:, rather than hard drive # 1, with BIOS
interrupt 13h. The options are: read sector to clipboard, write
clipboard to boot sector, read from file, write sector to file, and SYS
(the equivalent of refreshing the boot sector with the command SYS C:).
Detection of signature killer. InVircible has proven that it's possible
to anticipate viral technologies and counter them, before they become a
real threat. Although such threat didn't yet materialize, it's possible
to write a virus that could target InVircible's database to destroy its
files. To prevent such possibility, the new version detects the
presence of a signature killer and will alert on its presence.
Random signature filename. In former versions, a random signature
filename was automatically selected if the installation was done
through IVLOGIN. From this version and higher, use the IVLOGIN /RANDOM
switch to automatically select a random signature filename. Also, the
signature's default filename was reset to IVB.NTZ.
Enhanced rescue floppy procedure. Users may wish to have their favorite
utilities such as an ASCII editor on the rescue diskette. To do so,
just copy the additional files to a newly formatted floppy before
starting the rescue disk procedure, run INSTALL/R and answer "no" to
whether to wipe the floppy clean or not.