FOR IMMEDIATE RELEASE

Aladdin Knowledge Systems Offers Mac Developers New HASP Security
Implementation Tools

CHICAGO, July 28, 2003 ? Aladdin Knowledge Systems Ltd. (NASDAQ: ALDN)
today announced the availability of new Envelope and Remote Update System
(RUS) tools for Mac software developers implementing HASP, the company's
proven USB key-based cross platform software security and license
management solution.

The HASP Envelope Tool allows developers to protect applications in minutes
and provides useful features that complement API protection including
automatic implementation of anti-debugging and anti-hacking measures, File
encryption that secures code from prying eyes, and flexible licensing
models designed to meet the needs of Mac software developers.

For managing licenses and upgrading applications in the field, Aladdin's
RUS offers Mac developers flexibility and convenience. HASP RUS for Mac
gives software users 24/7 license updates, software upgrades and add-ons
via phone, fax, email, or the Internet. HASP's RUS API also allows
developers to easily incorporate remote license updating routines into
their software.

"Developers creating new and sophisticated applications for Apple's Mac OS
continue to rely on the security of HASP to help protect and manage their
titles," says Avi Barir, vice president, Software Commerce. "With these new
tools customers can quickly integrate HASP security into their products and
are free to explore new, lucrative revenue streams with the innovative
licensing models our technology delivers."

For more information on the complete line of HASP cross-platform software
security solutions, please visit: http://www.ealaddin.com/hasp..

Aladdin Knowledge Systems
Aladdin (Nasdaq: ALDN) is a leader in digital security, providing solutions
for software commerce and Internet security since 1985. Aladdin serves over
30,000 customers worldwide. Aladdin's products include: the USB-based
eToken device for user authentication and e-commerce security; the eSafe
line of content security solutions that protect PCs and networks against
spam, malicious, inappropriate and nonproductive Internet-borne content;
HASP and Hardlock, hardware-based software security systems that protect
the revenues of developers; and Privilege, a software licensing and
distribution platform. Please visit Aladdin's Web site at www.eAladdin.com.