BEDFORD, Mass.— – RSA Security Inc. (NASDAQ: RSAS) today announced that Microsoft’s Internet Security and Acceleration (ISA) Server 2004 supports the RSA SecurID® two-factor authentication solution, which helps provide a secure, simple and highly reliable way to verify a user’s identity before granting access to network resources.

ISA Server 2004 – now available – is an advanced application layer firewall, VPN and Web cache solution that enables customers to easily maximize existing IT investments by improving network security and performance. RSA Security and Microsoft worked closely together to enable ISA Server 2004 customers to take advantage of RSA SecurID capabilities, which is engineered to ensure that valuable desktop and network resources are accessible only by authorized users, while simultaneously delivering a simplified and consistent user log-in experience. This integration work also makes it simple to deploy ISA Server 2004 in RSA SecurID environments to help better protect applications.

Today’s announcement builds on the new RSA SecurID® for Microsoft® Windows® solution, available later this year through RSA Security, which is designed to provide Microsoft customers with a simple, consistent user login experience, regardless of whether the user is working on- or offline, remotely or inside the walls of the enterprise. “In today’s IT environment, with the sophistication of attacks growing each year, companies need to know that they have a high degree of control over who can access network resources and which resources they’re entitled to use,” said Bill McQuaide, senior vice president, enterprise solutions, RSA Security. “ISA Server 2004 working with RSA SecurID technology offers customers a powerful solution for a more secure and trusted network environment.”

“Customers tell us they need more seamless integration between their authentication infrastructures and perimeter security solutions,” said David Gardner, business development manager of the Security Business and Technology Unit at Microsoft Corp. “Our integration work with RSA Security makes it easier for customers to deploy ISA Server 2004 to help protect new and existing applications in RSA SecurID environments.”

RSA Security and Microsoft have collaborated on security projects since 1996 when Microsoft licensed RSA BSAFE® technology to build strong encryption into its products. The companies have also worked together on many other development, marketing and sales initiatives, and RSA Security is a Microsoft Gold Certified Partner.

About RSA SecurID Two-Factor Authentication
The RSA SecurID system is a two-factor user authentication solution that is as simple to use as entering a password, but significantly more secure. Used in conjunction with RSA ACE/Server® software, an RSA SecurID authenticator functions like an ATM card for a company network, requiring users to identify themselves with two unique factors — something they know (a password or PIN), and something they have (in this case, an RSA SecurID token that generates a unique six digit passcode every minute) — before they are granted access to secure business information

About RSA Security Inc.
RSA Security Inc. helps organizations protect private information and manage the identities of people and applications accessing and exchanging that information. RSA Security’s portfolio of solutions - including identity & access management, secure mobile & remote access, secure enterprise access and secure transactions - are all designed to provide the most seamless e-security experience in the market. Our strong reputation is built on our history of ingenuity, leadership, proven technologies and our more than 14,000 customers around the globe. Together with more than 1,000 technology and integration partners, RSA Security inspires confidence in everyone to experience the power and promise of the Internet. For more information, please visit www.rsasecurity.com.