Aladdin Knowledge Systems to Present at Three Investor Conferences

CHICAGO, May 17, 2007- Aladdin Knowledge Systems (NASDAQ: ALDN), the leader in Software DRM, USB-based authentication and secure Web gateways, today announced it is scheduled to participate in three investor conferences during the second quarter:

• CIBC World Markets 8th Annual Israeli Conference Tel Aviv, Israel -- May 20th
• FBR 2007 Growth Conference New York, NY -- May 30th
• Cowen and Company 35th Annual SMid-Cap Technology Conference New York, NY -- May 31st

About Aladdin

Aladdin Knowledge Systems' Software Rights Management products are the #1 choice of software developers and publishers to protect intellectual property, increase revenues, and reduce losses from software piracy. Aladdin eToken is the world's #1 USB-based authentication solution. The Aladdin eSafe secure Web gateway provides the most advanced protection against the latest Web-based threats and attacks. Aladdin has offices in 12 countries, a worldwide network of channel partners, and has won numerous awards for innovation. For more information, visit the Aladdin Web site at www.Aladdin.com.

©2007 Aladdin Knowledge Systems, Ltd. All rights reserved. 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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