Aladdin HASP HL USB Keys Add Support for Mac OS X Leopard

CHICAGO, December 18, 2007 - Aladdin Knowledge Systems (NASDAQ: ALDN), an information security leader specializing in authentication, software DRM and content security, today announced that its Aladdin HASP HL for Mac software anti-piracy and licensing USB key solution supports Mac OS® X Leopard.

"HASP HL's quick support for Mac OS X Leopard is yet another reason why we trust Aladdin to provide our company with timely, reliable software protection and licensing that matches the latest platforms available," said Bill Beven, senior director at EFI, an Aladdin HASP customer and world leader in customer-focused digital printing innovation. "We value Aladdin's responsive customer support as it helps us to in turn meet our customers' demands."

"Aladdin continually works to arm valued customers such as EFI with the latest software protection and licensing tools they need to protect revenues and grow business," said Avi Barir, vice president of software DRM at Aladdin Knowledge Systems. "As the #1 choice for software developers worldwide, Aladdin is pleased to announce support for Mac's latest operating system."

A USB-based software copy protection solution, Aladdin HASP HL enables software publishers to grow their revenues by providing several key benefits:

• Strong software copy protection
• Intellectual property protection
• Supports innovative licensing models to help you grow your business
• Rich variety of HASP HL models, including keys with memory, flash, real-time clock, and keys for network environments
• Securely upgrade/downgrade licenses on keys out in the field

About Aladdin HASP

The Aladdin HASP family of software DRM products is the #1 choice of software publishers worldwide. HASP provides software developers with strong software protection, licensing and distribution solutions that enable them to prevent software piracy and increase revenues, protect intellectual property, and expand licensing models to reach more customers. Visit www.Aladdin.com/HASP.

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, please visit the Aladdin Web site at www.Aladdin.com.

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