2002

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Contact:
Mike Yaffe
NTRU
(781) 418-2525
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NTRU Receives $11 Million Investment From Greylock Management and Sony Corporation

Greylock's Kaiser to Join NTRU Board of Directors

Boston, Mass. -- April 10, 2000 -- NTRU Cryptosystems, Inc. today announced it has received an equity investment of more than $11 million from a team of investors led by Greylock and Sony Corporation (ADR NYSE: SNE). NTRU develops and markets the world's fastest and smallest secure public key cryptography system, delivering patent-pending security solutions protecting content and communications in applications such as wireless telephony, digital music and video distribution, e-commerce and embedded applications.

William S. Kaiser, general partner at Greylock will serve on NTRU's board of directors. Mr. Kaiser currently sits as a director on the boards of Authentica, Inc., Digital Media on Demand (DMOD), Sightpath, Mainspring Communications, Open Market, Clarus, Red Hat, Student Advantage, Wildfire Communications, and WildTangent. Previously he served on the boards of Avid Technology, CheckFree, MapInfo, Raptor Systems and Spyglass.

"We are very pleased to receive this investment from such blue-chip firms as Greylock and Sony," said Scott Crenshaw, acting CEO of NTRU. "NTRU offers the best security solution for high performance and embedded applications. This investment gives us the financial resources to widely market and deploy our technology. And having Bill Kaiser on our board we gain the expertise of one of the industry's foremost experts in building high-value companies."

"The need for public key security is moving from traditional enterprise applications to mass market consumer electronics devices, such as wireless telephones, portable music players and digital televisions," continued Crenshaw. "Consumer devices have vastly different requirements than enterprise applications. Consumer security solutions must be fast, inexpensive to implement in hardware, and consume minimal power, all without sacrificing security. Existing technologies are too large and too slow. NTRU is able to deliver today the ideal solutions for consumer electronics applications."

"NTRU is a truly innovative technology that uniquely meets the needs of the emerging market for delivering security to consumer electronics devices," said William S. Kaiser, general partner at Greylock. "As the demand for cryptography moves beyond traditional IT applications, the need for high performance, low footprint security solutions are increasing dramatically. We believe NTRU is well positioned to become the leader in the next generation of e-commerce and digital media security."

"Sony is very excited about the potential application of NTRU technology within multiple consumer electronics products," said Martin Kuhn of Sony's Strategic Venture Management Group. "Sony was an initial investor in NTRU in 1998, and we are very pleased to demonstrate our continued support by participating in this second financing round."

Developed by a team of world-renowned mathematicians and cryptographers from Brown University, NTRU provides the fastest and most-efficient public key cryptography solution -- at all security levels. Unlike other technologies, NTRU resists parallel processing attacks. Its disposable-key technology allows frequent public key changes. These properties dramatically reduce the risk of power analysis, timing attacks, and the danger of security breaches due to misplaced, lost, or intercepted keys. NTRU offers high levels of security without the performance sacrifices inherent in competitive systems such as RSA (Nasdaq: RSAS) Public Key Cryptosystem and the Elliptical Curve Cryptosystem (ECC) from Certicom (Toronto: CIC). Both the academic and commercial cryptographic community have extensively studied the NTRU technology. Complete technical details, including a tutorial, are available on NTRU's web site: http://www.ntru.com/cryptolabs/.

Key benefits of NTRU over the competition include:

• Fast performance, even on low speed processors
• Small memory footprint
• Low cost to implement in hardware (fewer gates required)
• Increased server performance (supports more users with fewer servers)
• Reduced battery consumption

About Greylock

Greylock (http://www.greylock.com/) is a private venture capital firm, founded in Boston in 1965, with committed capital of over $1 billion under management. Over the past 35 years Greylock has provided equity capital and support to more than 300 developing companies, many of which have gone on to become leaders in their respective industries. Of these companies, over 150 have become publicly held, with a current market capitalization in excess of $80 billion, while another 100 have merged successfully with other companies.

About Sony

Sony Corporation is a leading manufacturer of audio, video, communications and information technology products for the consumer and professional markets. Its music, motion pictures, computer entertainment operations, and online businesses make Sony one of the most comprehensive entertainment companies in the world. Sony Corporation worldwide information can be found at http://www.world.sony.com/.

About NTRU Cryptosystems

NTRU delivers the fastest, most secure public key cryptography solutions to secure communications and content for the next generation of Internet connectivity. Applications include securing wireless data communications, digital music and video distribution, mobile e-commerce and Internet applications. Developed by a team of Brown University mathematics professors, NTRU operates more than 100 times faster than competitive systems at equivalent security levels and is easily implemented even in low-cost hardware devices. For more information, see http://www.ntru.com/ or call us at 888.346.NTRU or 617.948.9138. NTRU is pronounced "En' true."

NTRU, FastWTLS, the NTRU logo and the FastWTLS logo are trademarks of NTRU Cryptosystems, Inc. Portions of NTRU's system are the subject of pending patent applications in the US and internationally.

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