Second Largest ISP in Trinidad and Tobago to Offer Customers Safer Surfing with Aladdin Web Security Solution

CHICAGO, March 30, 2007 - Aladdin Knowledge Systems Ltd.
(NASDAQ: ALDN), the leader in Software DRM, strong authentication and content security solutions, today announced that Green Dot Limited, the second largest ISP in the twin-island Caribbean republic of Trinidad and Tobago, selected Aladdin's eSafe SecureSurfing™: solution to offer its customers "clean pipe" Internet access. Green Dot's carrier class infrastructure covers 90 percent of Trinidad's population of 1.3 million citizens, bringing local and global access within reach.

The first-ever centralized, value-added security service for ISPs in the West Indies, Aladdin's eSafe SecureSurfing solution seamlessly inspects all Web traffic before it reaches Green Dot's subscribing high speed ISP customers - both businesses and consumers. It frees the ISP subscriber of the hassle of maintaining desktop-based software to protect against growing threats such as phishing attacks and spyware.

With the company's deployment of SecureSurfing technology, Green Dot ISP customers will be provided an unmatched set of "behind the scenes" protection tools automatically used any time they surf the Web:

• Real-time Web surfing security with four-layer spyware blocking
• Real-time Web surfing Trojan and worm blocking with full Web page content inspection
• Real-time Web surfing exploit, vulnerability, and AJAX client-attacks blocking
• Web email security and antivirus effective for almost any Web-based email service

Easily implemented and requiring no overhead for Green Dot, SecureSurfing combines powerful technologies backed by Aladdin eSafe's recognized leadership in comprehensive, innovative content security solutions. It stands as a fast, completely management-free protection solution for Web traffic - a highly anticipated solution that serves as a powerful differentiator for ISPs worldwide.

"Green Dot is pleased to announce plans to implement the Aladdin eSafe SecureSurfing solution, as it provides our valued ISP customers with yet another example of our commitment to leading the market in Trinidad and Tobago - taking us one step closer to becoming the largest local provider in the country," said Ketan Patel, General Manager of Green Dot Limited. "We see SecureSurfing as an offering that enhances our appeal, but also provides a valuable security service that customers clearly appreciate."

"One of latest ISPs to select eSafe SecureSurfing, Green Dot is the first to bring this unmatched Web security technology to the Caribbean," said Tsion Gonen, vice president of the Aladdin eSafe Business Unit. "Proving appealing to ISPs in all corners of the globe, eSafe SecureSurfing is the first-ever technology designed specifically for ISP-managed security services. It can be quickly and easily integrated within an ISP's infrastructure and started with nearly zero up-front cost - providing a streamlined, inexpensive tool for bringing unmatched value to customers, while also paving the way toward increased revenues."

With eSafe SecureSurfing, ISPs can easily:

• 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

About Green Dot Limited

Green Dot is the leading innovator in Telecommunication solutions in Trinidad and Tobago. Green Dot puts secure, reliable, cost effective global communications within reach, focusing on its commitment to delivering world class solutions backed by unmatched customer support systems. Customer service is staffed 24 x 7, to fulfill customer needs through unparalleled technical support. Green Dot's carrier class infrastructure currently covers 90 percent of Trinidad's population bringing local and global access within reach. With a list of premier clientele growing steadily on a daily basis, Green Dot continues to pioneer solutions in markets and services using leading edge technology combined with a long term, client-oriented vision. Visit www.greendottt.com.

About Aladdin eSafe

Aladdin eSafe is a high capacity, perimeter-based, strong content security solution that provides organizations a transparent shield from threats and enhances productivity. eSafe enables organizations to supply secure Web surfing through a wire speed security gateway featuring powerful anti-spyware and unauthorized application filtering; reduce spam though a proactive email security gateway with advanced spam management; and improve security through URL filtering with transparent inspection of HTTP, FTP, SMTP and POP3. For more information, please visit www.Aladdin.com/eSafe.

About Aladdin

Aladdin Knowledge Systems Ltd. (NASDAQ: ALDN), founded in 1985, is a global provider of security solutions. Its security products are organized into two segments: Software Digital Rights Management (DRM) and Enterprise Security. Aladdin's Software DRM products allow software developers and publishers to protect their intellectual property, increase revenues through licensing, and reduce losses from software piracy. Aladdin's Enterprise Security solutions enable organizations to secure their information technology assets by controlling who has access to their networks (identity and password management) and what content their users can utilize (proactive content security). Aladdin has offices in 10 countries, a worldwide network of channel partners and holds numerous industry awards for innovation and reliability. For more information, please 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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