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Press Release

Symantec's Norton AntiVirus Number One in U.S. Retail Sales for First Half of 1999, Says PC Data

Seven Symantec Products in PC Data Top 20 Best-Selling List More Than Any Other Vendor

Cupertino, Calif, August 9, 1999 - Figures released by independent market intelligence firm, PC Data, show that Symantec Corporation's (Nasdaq:SYMC) Norton AntiVirus 5.0 was the number one business software sold* in the U.S. retail market for the first six months of 1999.

According to PC Data, the U.S. retail market grew 17 percent in units during the first six months of 1999 compared to the first six months of 1998, while Symantec increased unit sales by 61 percent in the same period.

In the important anti-virus category, Symantec increased unit sales by 64 percent during the six months to be the leader with 60 percent market share.

For the period January through June, seven Symantec products featured in PC Data's hit list of top-selling business software: Norton AntiVirus 5.0, Norton SystemWorks 2.0, Norton SystemWorks 1.0, pcAnywhere 32 Host/Remote, WinFax Pro 9.0, Norton Utilities 4.0 and Norton AntiVirus 5.0 Deluxe.

On July 14, Symantec announced the first of a worldwide chain of online stores created and managed by Internet superstore Beyond.com. Symantec's e-commerce revenue increased 166 percent for the June quarter 99 over the June quarter 98.

"Symantec is well placed to take advantage of the evolution of customers buying software over the Internet. Symantec's substantial growth and leadership position in the retail market for the first half of 1999 demonstrates our ability to consistently satisfy consumer customer needs," says Keith Robinson, vice president, Americas.

Symantec's strength in PC retail software sales is reflected in the Macintosh retail market where Symantec led with two products in the top 10, Norton Utilities 4.0 and Norton AntiVirus 5.0.

*based on units sold

About PC Data
PC Data is the leading market intelligence firm for software and hardware point of sale data with coverage of more than 80 percent of the U.S. retail marketplace. The Reston, VA based company has become the industry standard for tracking software and hardware sales through the retail, corporate and distributor channels. PC Data is located on the World Wide Web at http://www.pcdata.com.

About Symantec
Symantec is a world leader in Internet security technology and technology solutions that help companies manage and support workforces that use laptop computers and other mobile devices.

The company is a leading provider of software products for the consumer market and is rapidly growing its presence as a provider of solutions to enterprise organizations

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