RSA Security Confirms Q4 2001 Guidance

BEDFORD, Mass., Dec. 3 /PRNewswire/ RSA Security Inc. (Nasdaq: RSAS) today announced that it is reconfirming its previously stated guidance for Q4 2001. On October 11, 2001, RSA Security stated that it expects revenue for the fourth quarter of 2001 to be approximately $63 to $65 million. “Based on our view of the quarter, we see no reason to change our current guidance estimates,” said Art Coviello, CEO and president at RSA Security. “We remain convinced that the strong growth in e-business applications is creating expected demand for our market-leading authentication, authorization, encryption and PKI solutions.”

About RSA Security Inc.

RSA Security Inc., the most trusted name in e-security(R), helps organizations build secure, trusted foundations for e-business through its RSA SecurID(R) two-factor authentication, RSA ClearTrust(R) authorization, RSA BSAFE(R) encryption and RSA Keon(R) digital certificate management product families. With more than one billion RSA BSAFE-enabled applications in use worldwide, more than ten million RSA SecurID authentication users and almost 20 years of industry experience, RSA Security has the proven leadership and innovative technology to address the changing security needs of e-business and bring trust to the online economy. RSA Security can be reached at http://www.rsasecurity.com.

NOTE: RSA, BSAFE, ClearTrust, Keon, SecurID and The Most Trusted Name in e-Security are registered trademarks of RSA Security Inc. All other products and services mentioned are trademarks of their respective companies.

This press release contains forward-looking statements regarding RSA Security’s financial condition and growth for the fourth quarter of 2001. These statements involve a number of risks and uncertainties. Some of the important factors that could cause actual results to differ materially from those indicated by the forward-looking statements are general economic conditions, including the current weakness in the global economy, changes in our operating expenses, the timing of the introduction or enhancement of our products and our competitors’ products, changes in product pricing, including changes in competitors’ pricing policies, development of our direct and indirect distribution channels, integration of acquisitions, personnel departures and new hires, delays in product development, competitive pressures, changes in customer and market requirements and standards, market acceptance of new products and technologies, technological changes in the computer industry and the risk factors detailed from time to time in RSA Security’s periodic reports and registration statements filed with the Securities and Exchange Commission, including without limitation RSA Security’s Annual Report on Form 10-K filed on March 28, 2001 and Quarterly Report on Form 10-Q filed on October 17, 2001.

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