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Press Release

Symantec Discovers more Copied Code in Multiple McAfee Products, Including VirusScan

Symantec requesting injunction to stop shipment and remove offending McAfee product from distribution channel

CUPERTINO, Calif. --July 21, 1997-- Symantec Corporation (Nasdaq: SYMC) today filed a motion to amend its original complaint against McAfee (Nasdaq: MCAF) for copyright infringement involving Symantec's Norton CrashGuard and McAfee's PC Medic 97. The amendment results from Symantec's most recent findings, confirmed by an independent 3rd party that McAfee has used additional code copied from Symantec in other McAfee products, including VirusScan, the company's flagship product, and PC Medic 97. Symantec has also filed a supplemental motion for a preliminary injunction based on the newly discovered copying.

As a part of ongoing discovery procedures, McAfee produced its source code to Symantec's outside counsel for review by an independent expert, operating under the Court's order. This expert has been certified as a software expert in several Federal Courts, and has instructed Federal Judges regarding software technology issues. This independent expert examination of McAfee source code indicates that significant source code instructions and accompanying comments in McAfee's code are identical or substantially similar to significant portions of the source code instructions and accompanying comments in Symantec source code.

The copied code includes sophisticated routines that are used extensively in many Symantec products. The code enables Symantec to develop applications quickly and by shortening time to market, Symantec answers customers' demands for the most up-to-date and comprehensive system solutions possible. The misappropriation of this code represents a serious loss to all technology product users, who depend on innovation and progress for more creative and flexible solutions to today's increasingly complex problems.

"Ultimately, customers are the losers in cases involving technology theft because they don't get the best products for their money. The most competitive offerings do not result from cloning, copying, or theft. They result from innovation," said Enrique Salem, Symantec's chief technology officer.

Symantec filed the original lawsuit on April 23 of this year. A hearing for a preliminary injunction is scheduled for August 29, 1997, in which Symantec is requesting the Court to order a stop to the shipment of McAfee products with the infringing code, and to remove all the products that include it from the distribution channel. In response to the original lawsuit, McAfee has stated that it has replaced the infringing code in PC Medic '97 and will release a "clean room" version.

About Symantec
Symantec Corporation helps make users productive and keep their computers safe and reliable anywhere and anytime. Symantec offers a broad range of solutions and is acclaimed as a leader in both customer satisfaction and product brand recognition. The company is focused on addressing customer needs in three main application areas: the Norton product line of anti-virus and PC-assistance products; the ACT! product lines that cater to remote user productivity; and the Café product lines in Internet development tools.

Founded in 1982, the company's global operations span North America, Europe, Japan - and several fast growing markets throughout Asia Pacific and Latin America. Traded on Nasdaq under the symbol SYMC, Symantec Corporation is based in Cupertino, California and employs more than 2000 people. Information on the company and its products can be obtained by calling (800) 441-7234 toll free, (541) 334-6054 or accessed on the World Wide Web at http://www.symantec.com.

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