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Aladdin Granted Important U.S. Patent for Proactive Protection Against Spyware and Viruses


New patent supports industry-leading proactive technology within Aladdin eSafe

CHICAGO, April 11, 2006 - Aladdin Knowledge Systems (NASDAQ: ALDN), the leader in Software DRM, identity management and content security solutions, today announced it has been granted U.S. patent 7,013,483, titled “Method for emulating an executable code in order to detect maliciousness.” The new patent covers the detection of viruses, spyware and other kinds of malicious code by emulation - one of the most powerful methods for identifying malicious activity.

An emulator, as described in the patent, creates a virtual environment under which the code of the tested sample is examined instruction-by-instruction. The viral activity is then detected by correlating the changes with the viral behavior. Emulation features several advantages in comparison to other methods of detecting and/or preventing viral damage, since it helps to detect polymorphic viruses, encrypted viruses and unknown viruses, which cannot be detected by other methods.

The new patent further supports the uniquely proactive capabilities within the award-winning Aladdin eSafe solution. Recently awarded Information Security Magazine’s Hot Pick Award and named the Best Anti-Trojan Solution in the 2006 SC Magazine Awards, eSafe stands as one of the most reliable gateway-based content security solutions that routinely blocks zero-day malicious code. eSafe’s proactive capabilities serve as a significant differentiator from competing solutions that initially leave organizations vulnerable during the crucial first few hours of a new malicious code discovery. Aladdin’s 2005 Content Security Response Team Report concluded that eSafe proactively detected 96 percent of virus outbreaks.

“Aladdin’s newly patented technology positions eSafe not only as a security solution that proactively detects malicious code in executable files, but also one of the most efficient solutions available today - prioritizing throughput and speed without compromising on security,” said Yanki Margalit, CEO of Aladdin Knowledge Systems. “We’re pleased to announce this patent, as it illustrates our constant drive for innovation.”

About Aladdin eSafe 5

Aladdin eSafe is an integrated gateway content security solution providing proactive email security and Web browsing security. As an in-line, transparent solution, eSafe offers the industry’s highest content security performance, encompassing:

* Layered anti-spyware
* Spam management
* Application filtering
* Proactive anti-virus technologies

Unlike other products which focus on viruses, eSafe protects users and the enterprise from Web-borne content threats including spam, viruses, known and unknown worms, Trojans, Webpage malicious code, spyware, unauthorized P2P, Instant Messaging applications, and more. With eSafe, organizations take control before problems arise, saving valuable time as well as thousands of dollars in costly repairs, and providing content security where it counts most - at the gateway front line. For more information on Aladdin eSafe, visit

About Aladdin

Aladdin Knowledge Systems Ltd. is a global provider of security solutions that reduce software theft, authenticate network users and protect against unwanted Internet and e-mail content, including spam, viruses and spyware. Its security products are organized into two segments: Software Digital Rights Management (DRM) and Enterprise Security. Aladdin’s Software DRM products allow software publishers to protect their intellectual property and increase revenues by reducing losses from software theft and piracy. Its Enterprise Security solutions enable organizations to secure their information technology assets by controlling who has access to their networks (authentication) and what content their users can utilize (content security). Visit the Aladdin Web site at

©2002-2006 Aladdin Knowledge Systems, Ltd. All rights reserved. eSafe, Aladdin Knowledge Systems and the Aladdin logo are trademarks or registered trademarks of Aladdin Knowledge Systems, Ltd. All other product and brand names mentioned in this document are trademarks or registered trademarks of their respective owners.


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