Rainbow’s Sentinel Secures Microsoft Windows and Linux Applications Developed for IBM’s AS/400 iSeries Platform

Rainbow Increases the Breadth of its Sentinel Product Line By Adding Support for the Industry’s Most Popular OS/Hardware Platforms

IRVINE and SAN DIEGO, Calif., April 15, 2002 – Rainbow eSecurity, a Rainbow Technologies, Inc. (Nasdaq: RNBO) company and a leading provider of digital content and transaction security solutions for the Internet, eCommerce and software protection, announced at today’s 2002 Software & Information Industry Annual conference that Rainbow’s Sentinel software security solutions are the first to secure applications for IBM’s AS/400 iSeries hardware platforms

Both the Sentinel SuperPro and SuperProNet software security token families will secure AS/400 applications developed for Microsoft Windows or Linux operating systems that support the OS/400 operating systems versions V4R5 and higher, as well as Linux AS/400. Additionally all Sentinel hardware keys supporting this robust hardware platform can use SentinelLM 7.1.1 license management to effectively and efficiently manage license usage as well as communicating with SentinelLM ports running on other operating systems in large heterogeneous environments. This allows the AS/400 to effectively provide enterprise-wide management on any Sentinel-secured client.

“Powerful security and interoperability are essential for mission-critical applications in any large enterprise environment,” said David M. Lynch, vice president of marketing, Rainbow eSecurity. “Now, for the first time, application developers can choose a single security solution to secure and manage cross-platform applications that leverage robust servers like IBM’s AS/400. We are proud to create new solutions for extending our industry-leading Sentinel product line to support the real-world cross platform environments today’s customers use.”

The Sentinel Suite of Products

The Sentinel product family enables software security for ISVs and software developers through secure hardware and software-based license software distribution and management tools. Sentinel secures applications from unauthorized execution and protects developers and ISVs from illegal licensing and distribution. These products represent the industry’s most powerful and flexible solution for securing critical applications in stand-alone or networked environments. Rainbow’s eSecurity group markets the industry’s leading software security, electronic software licensing and management, and digital rights management solution.

Rainbow’s Sentinel solutions provide the tools to enable:

· Digital Rights Management (DRM) for software and applications

· Electronic License Distribution/Management (ELD/M)

· Electronic Software Distribution (ESD)

· Electronic Commerce Licensing Tools and Security

Rainbow has sold more than 28 million smart tokens to date, securing more applications for more users than any other company in the industry.

About Rainbow Technologies

Founded in 1984, Rainbow Technologies is a leading provider of digital content and transaction security solutions for the Internet, eCommerce and mCommerce. Rainbow applies its core technology to a variety of Internet applications-from securing software, to the acceleration of secure communication for eCommerce and VPNs. Rainbow’s products include secure Web server and VPN acceleration boards; anti-piracy and Internet software distribution solutions; PKI security solutions; voice, data and satellite security systems; and USB-based authentication tokens. The company’s headquarters are in Irvine, California, and maintains offices throughout the United States, United Kingdom, France, Germany, Australia, China, Japan, India, The Netherlands, Brazil, Mexico and Taiwan. A network of nearly 80 authorized distributors sells Rainbow products worldwide. For more information, visit our Web site at www.rainbow.com.

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Rainbow Technologies, Sentinel, SuperPro, SuperProNet, SentinelLM and SentinelExpress are trademarks of Rainbow Technologies.

The Private Securities Litigation Reform Act of 1995 provides a “safe harbor” for forward-looking statements. Certain information included in our Annual Report on Form 10-K and other materials filed with the Securities and Exchange Commission (“SEC”) (as well as information included in oral statements or other written statements made or to be made by the Company) contain statements relating to the following: dependence upon existing and new product offerings, competition, intellectual property and licensing, future growth, rapid technological and market change, manufacturing and sourcing risks, Internet infrastructure and regulation, the inclusion of network security functionality in hardware or system software, international operations, among others. These conditions involve important factors that could cause actual results to differ materially from those expressed in any forward-looking statements made by or on behalf of the Company. Any forward-looking statements are made pursuant to the Private Securities Litigation Reform Act of 1995 and, as such, speak only as of the date made. Statements made in this document that are not purely historical are forward-looking statements, including any statements as to beliefs, plans, expectations, or intentions regarding the future. The Company assumes no obligation to update information concerning its expectations.

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