FOR IMMEDIATE RELEASE

Aladdin Knowledge Systems' HASP Links to .NET Programs

Introduces greater security and flexibility for .NET developers CHICAGO,
May 8, 2003 -- Responding to the growing market for ..NET applications,
Aladdin Knowledge Systems Ltd. (NASDAQ: ALDN) today announced it has
introduced a new HASP .NET Assembly to more simply integrate application
security for developers building software in the ..NET environment.

Aladdin's HASP .NET Assembly provides simple and efficient linking to all
..NET languages and supports new industry standards that ensure that code
based on .NET can integrate with any other code. It also strengthens safe
code execution in the .NET framework so developers can be assured that
their products and revenues are protected in today's highly distributed
Internet environment.

"With HASP's .NET Assembly," says Avi Barir, Aladdin's vice president,
Software Commerce, "developers moving to the object-oriented .NET framework
can seamlessly integrate HASP's proven security and licensing flexibility
within Microsoft's programming-friendly code execution
environment?regardless of the .NET language they adopt."

HASP Software Security System

HASP (Hardware Against Software Piracy) is a versatile hardware-based
security system that protects software against piracy and illegal use
which, according to Business Software Alliance estimates, cost the U.S.
software industry $1.8 billion in 2001. HASP software security solutions
are deployed with either a USB key or parallel-port device and provide
software developers full support for Windows, Mac, and Linux operating
systems. HASP helps developers increase and maintain revenues by enforcing
license agreements and providing flexible sales models including
time-limited demos, concurrent or floating licenses, and remote software
module updates and license renewals. Easy to implement and simple to use,
HASP comes with many wizard-based utilities and step-by-step documentation
features on-chip encryption, auto-protection with advanced Envelope Utility
and remote updating system for updating keys in the field on Windows and
Mac platforms.

For more information on HASP 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
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.