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Press Release

Symantec Mail Security 4.O now Supports the Microsoft Office System

Symantec To Demonstrate Solution During The Microsoft Office System Launch in New York Today

CUPERTINO, Calif. - Oct. 21, 2003 - Symantec Corp. (Nasdaq: SYMC), the world leader in Internet Security, today announced Symantec Mail Security now offers support for the Microsoft Office System, including Microsoft Exchange Server 2003. Symantec Mail Security provides a comprehensive, integrated mail security solution consisting of content filtering, spam prevention, and industry leading antivirus protection.

“The Microsoft Office System, including Microsoft Exchange Server 2003, offers great value to customers in the enterprise,” said Chris Baker, group product manager for Exchange at Microsoft Corp. “Symantec is extending the business value of the Microsoft Office System by providing security solutions that meet the needs of enterprise customers operating Microsoft Exchange Server 2003.”

“Exchange servers are a critical component of today’s enterprise networks,” said Greg Gotta, vice president, gateway and network security, Symantec Corporation. “Symantec Mail Security for Microsoft Exchange is another example of Symantec’s commitment to provide enterprise customers with security solutions that keep their networks up and running.”

Symantec Mail Security for Microsoft Exchange, formerly named Symantec AntiVirus/Filtering for Microsoft Exchange, was launched in June 2003. Symantec Mail Security provides comprehensive protection, detection and removal of security threats on Microsoft Exchange 2000 and Exchange Server 2003 servers. By providing spam prevention, antivirus and content filtering in a single integrated product, Symantec provides complete protection with a single solution. A fast, scalable solution, Symantec Mail Security can be centrally managed from a single console and is backed by Symantec Security Response, the world's leading Internet security research and support organization.

About Symantec
Symantec is the world leader in providing solutions to help individuals and enterprises assure the security, availability, and integrity of their information. Headquartered in Cupertino, Calif., Symantec has operations in more than 40 countries. More information is available at www.symantec.com.

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FORWARD LOOKING STATEMENT: This press release contains forward-looking statements, including forecasts of future revenue and earnings per share, expected industry patterns, and other financial and business results that involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to differ materially from results expressed or implied by this press release. Such risk factors include, among others: the sustainability of recent growth rates, particularly in consumer products; whether certain market segments, particularly enterprise security, grow as anticipated; the positioning of Symantec's products in those segments; the competitive environment in the software industry; ability to integrate acquired companies and technology; ability to retain key employees; ability to successfully combine product offerings and customer acceptance of combined products; general market conditions, fluctuations in currency exchange rates, changes to operating systems and product strategy by vendors of operating systems; and whether Symantec can successfully develop new products and the degree to which these gain market acceptance. Actual results may differ materially from those contained in the forward-looking statements in this press release. Additional information concerning these and other risk factors is contained in the Risk Factors sections of Symantec’s previously filed Form 10-K and Form 10-Q.