Network Associates and NTT DoCoMo to Develop Compact Anti-Virus Engine for Mobile Handsets

Partnerships
Will Deliver Easy Implementation for Limited Memory Resource Devices Like Mobile Handsets

SANTA CLARA, Calif./TOKYO, October 17, 2003---NTT DoCoMo, Inc. (TSE:9437; LSE:NDCM; NYSE: DCM) and Network Associates, Inc. (NYSE: NET) today announced that both companies have jointly developed a key technological element for a compact anti-virus engine, based on Network Associates' McAfee security technology, to protect future mobile communication services. The two companies have been jointly developing scanning technology for multimedia content, like e-mail, since May 2002.

The companies will continue to work toward offering a compact anti-virus engine, incorporating mobile specific technologies in mobile handsets for NTT DoCoMo, targeting by the end of 2004. In addition, the two companies will investigate the possibility of contributing the associated technology to international standardization organizations, while continuing to research and develop solutions to protect and enhance future mobile communication services.

Current mobile phone service is secure as it is a closed network. However, future mobile communication services are projected to expand globally with increasingly diverse functionality, while the mobile handset architecture will become more unified in terms of the operating system, standardization, and open specifications. As a result of this trend, it is possible that mobile environments may become increasingly vulnerable to malicious attacks compared to conventional mobile phones. The solution to this threat lies not only in securing the mobile network but also handsets, with the two approaches complementing each other. NTT DoCoMo's mobile communication technology and Network Associates' security technology will provide NTT DoCoMo's subscribers with a secure mobile environment with expanded usage for mobile multimedia services.


About NTT DoCoMo
NTT DoCoMo is the world's leading mobile communications company with more than 47 million customers. The company provides a wide variety of leading-edge mobile multimedia services. These include i-mode®, the world's most popular mobile internet service, which provides e-mail and internet access to over 39 million subscribers, and FOMA®, launched in 2001 as the world's first 3G mobile service based on W-CDMA. In addition to wholly owned subsidiaries in Europe and North and South America, the company is expanding its global reach through strategic alliances with mobile and multimedia service providers in Asia-Pacific, Europe and North and South America. NTT DoCoMo is listed on the Tokyo (9437), London (NDCM), and New York (DCM) stock exchanges. For more information, visit www.nttdocomo.co.jp/english

i-mode and FOMA are trademarks or registered trademarks of NTT DoCoMo, Inc. in Japan and other countries.
NTT DoCoMo's FOMA services are only available to subscribers in Japan.


About Network Associates
With headquarters in Santa Clara, California, Network Associates, Inc. (NYSE: NET) creates best-of-breed computer security solutions that prevent intrusions on networks and protect computer systems from the next generation of blended attacks and threats. Offering two families of products, McAfee System Protection Solutions, securing desktops and servers, and McAfee Network Protection Solutions, ensuring the protection and performance of the corporate network, Network Associates offers computer security to large enterprises, governments, small and medium sized businesses, and consumers. These two product portfolios incorporate Network Associates leading McAfee Security, Sniffer Technologies® and Magic Solutions® product lines. For more information, Network Associates can be reached at 972-963-8000 or on the Internet at www.networkassociates.com.

Network Associates, McAfee, Sniffer, and Magic Solutions, are either registered trademarks or trademarks of Network Associates, Inc. and/or its affiliates in the United States and/or other countries. All other registered and unregistered trademarks herein are the sole property of their respective owners.

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