News Release-- April 29, 2004

CSC DELIVERS FULL SYSTEM CAPABILITY PHASE OF FBI TRILOGY PROGRAM

EL SEGUNDO, Calif., April 29, 2004 – Computer Sciences Corporation (NYSE: CSC) today announced delivery of the Full System Capability phase of the Federal Bureau of Investigation’s Trilogy Program. Completion of this phase is a key milestone in the Bureau’s information technology (IT) systems overhaul and move from a paper-driven organization to one that employs the latest, most powerful technology.

Full System Capability marks the completion of the Information Presentation Component of Trilogy and gives field agents and analysts far greater ability to use state-of-the art investigative and intelligence tools; share information across the Bureau and with other agencies; and stay ahead of national security threats posed by terrorist, intelligence and criminal groups. It also allows the Bureau to strengthen security weaknesses that have affected the FBI in the past.

The Trilogy Program began in May 2001. Since then, several phases have been successfully completed. CSC, in conjunction with the FBI and the U.S. General Services Administration’s Federal Systems Integration and Management Center, a program of the Federal Technology Service, has designed and deployed a modern IT infrastructure. Following Sept. 11, 2001, new desktops were deployed throughout the Bureau allowing agents to input, retrieve, edit and present information in text, image, audio and video formats. In March 2003, CSC completed the Transportation Network Component portion of the project when a new wide area network architecture was deployed to provide secure communications and allow information sharing within and between all FBI offices worldwide.

Later in 2003, CSC implemented a new enterprise management system to provide infrastructure management down to the server level and enable distribution of software updates to the desktop level. In the Full System Capability phase just completed, new file, print, e-mail and storage servers supporting more than 600 locations were installed, and more than 29,000 users were migrated to the new e-mail system and server architecture.

Prior to Trilogy, many FBI employees were working on desktop computers that were up to eight years old and unable to run basic software taken for granted in most offices around the globe. Agents could not store and transmit crucial investigative information, including photos and graphical and tabular data. Many offices were connected to the FBI network at speeds of 56K, slower than many home Internet connections, and many lacked reliable office e-mail.

“Before the project began, the FBI had made no major IT improvements in more than six years, which is a very long time considering how fast technology changes,” said Paul Cofoni, president of CSC’s Federal Sector business unit. “Trilogy gives the Bureau a new IT infrastructure that will suit its needs today and well beyond the foreseeable future.”

Cofoni stressed that Trilogy involves more than just replacing old IT systems. “It’s not enough, and may be even counterproductive, to build a brand new, modern system only to support antiquated practices. Part of the project called on CSC to use its experience to help the FBI define better processes and achieve some key business goals. To that end, Trilogy will also bring about critical changes in security and enterprise management.”

Trilogy is comprised of three primary components: the Information Presentation Component (IPC), the Transportation Network Component (TNC) and the User Application Component (UAC). CSC was responsible for the IPC and TNC portions.

About CSC

Founded in 1959, Computer Sciences Corporation is a leading global IT services company. CSC’s mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 90,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC’s own advanced capabilities. These include systems design and integration; IT and business process outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $13.8 billion for the 12 months ended Jan. 2, 2004. For more information, visit the company’s Web site at www.csc.com.