Thai ISP Selects Aladdin Web Security Solution to Offer Customers Safe Web Browsing

CHICAGO, March 21, 2007 - Aladdin Knowledge Systems Ltd. (NASDAQ: ALDN) the leader in Software DRM, strong authentication and content security solutions, today announced that Internet Solution & Service Provider Co., Ltd. (iSSP), a leading Thailand ISP, selected Aladdin’s eSafe SecureSurfing™ solution to provide its business customers with the country’s first “clean pipe” Internet access.

iSSP started the service last week, bringing its customers a centralized, value-added security service that inspects and filters Web traffic before it reaches the surfer. Freeing ISP subscribers of the hassle of maintaining desktop-based software to thwart threats such as spyware and phishing attacks, the Aladdin eSafe SecureSurfing Web security platform is the first-ever technology designed for ISP-managed security services.

Centralized, Real-Time Web Surfing Protection

iSSP customers will gain unparalleled peace of mind while surfing, benefiting from real-time Web surfing security with four-layer spyware blocking; real-time Web surfing Trojan and worm blocking with full inspection of all Web page content; real-time Web surfing exploit, vulnerability, and AJAX client-attacks blocking; and Web email security and antivirus effective for almost any Web-based email service. This comprehensive protection proves appealing to small- and medium-sized businesses subscribing to iSSP’s service, as it requires no overhead and stands as a fast, management-free protection solution for Web traffic. Delphi Technology Co., a local Thai IT specialist, assisted in the deal.

“Throughout our testing, the eSafe SecureSurfing solution from Aladdin consistently provided protection we see as a great, differentiating factor that will bring our iSSP customers full surfing security without any ongoing maintenance on their part,” said Mr. Bundit Wongwatanasin, President of iSSP. “Not only are we pleased to quickly offer this solution to our business customers, but we see this technology as a significant revenue builder that enhances the value of our trusted service.”

“Aladdin continues to see large ISPs, such as iSSP in Thailand, take advantage of the small investment and great return surrounding eSafe SecureSurfing,” said Tsion Gonen, vice president of the Aladdin eSafe Business Unit. “Our ‘Clean Internet pipe’ technology, delivering high security and complete transparency, is based on Aladdin’s innovative, proactive technology that repeatedly proves successful at bringing overwhelming value to ISPs and their customers, requiring little work to integrate and deploy this value-added service.”

With eSafe SecureSurfing, ISPs can:

* Generate immediate revenues and differentiation with minimal investment
* Offer high-demand, value-added Web security services
* Increase customer satisfaction, retention and recruitment
* Sharply reduce spyware-related helpdesk costs
* Provide customers with a clean line with no need to configure, install or update
* Make security transparent to customers