Aladdin Joins MAAWG and AASP

Aladdin to collaborate on email security issues and ISP security services through new memberships in the Messaging Anti-Abuse Working Group and the American Alliance of Service Providers

CHICAGO, June 19, 2006 - Aladdin Knowledge Systems (NASDAQ: ALDN), the leader in Software DRM, identity management, and content security solutions, today announced its membership in the Messaging Anti-Abuse Working Group (MAAWG) and the American Alliance of Service Providers (AASP).

With Aladdin eSafe, an integrated, proactive content security, spyware and virus protection solution, Aladdin joins the nation's leading vendors and ISPs in MAAWG and AASP to collaborate on best practices, including centralized security at the ISP level. Through its new membership, Aladdin takes an active role within the joint forces working to reduce spam, spyware, phishing and email abuse, help develop best practices to limit network access to spammers and hackers and identify new email and Web threats - all while maintaining the many needed features and conveniences for ISP customers.

"The MAAWG and AASP both stand as valuable organizations for discussing and voicing security issues and methods for hundreds of millions of Internet users," said Shimon Gruper, vice president of technologies for the Aladdin eSafe Business Unit. "We're pleased to announce our participation in these groups, as we look forward to collaborating on the increased need for offering Web surfers a reliable, gateway-based content security solution offered as an additional, necessary tool to create a clean Internet pipeline."

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.

About the Messaging Anti-Abuse Working Group (MAAWG)

The Messaging Anti-Abuse Working Group (MAAWG) is where the messaging industry comes together to work against spam, viruses, denial-of-service attacks and other online exploitation. MAAWG (www.maawg.org) is the only organization addressing messaging abuse holistically by systematically engaging all aspects of the problem, including technology, industry collaboration and public policy. It leverages the depth and experience of its global membership to tackle abuse on existing networks and new emerging services. Headquartered in San Francisco, California, MAAWG is an open forum driven by market needs and supported by major network operators and messaging providers. Visit www.maawg.com.

About the American Alliance of Service Providers (AASP)

The American Alliance of Service Providers is an organization that was set up to join together ISPs in a unified front. AASP also has other Internet related companies offering Web Design and Web Hosting as members. We, as a small ISP watching the events in the ISP industry, had concerns about the future of the small to medium sized ISPs. We decided that to get ISPs better pricing and other benefits that a group effort would be needed, and so AASP was born. AASP has grown to over 700 ISPs. These ISPs collectively bring to the table more than 5.3 Million consumers and take a collective number of Web Hits per month to the tune of 220 Million and employ over 8,400 people. Visit www.aaserviceproviders.org.

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 www.Aladdin.com.

©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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