CSC SIGNS $140 MILLION IT OUTSOURCING CONTRACT EXTENSION

Communiqués -- Décembre (mois) 27, 2006

EL SEGUNDO, Calif., Dec. 27 – Computer Sciences Corporation (NYSE: CSC) announced today that it has signed a five-year, $140 million extension to an existing applications management outsourcing contract with an unnamed client.

Through the agreement, CSC will provide applications development and maintenance services associated with back-office functions.

“We are pleased to add another contract extension to the various new agreements we’ve signed with existing clients this year,” said Chairman and Chief Executive Officer Van B. Honeycutt. “With years of experience and the ability to develop close working relationships with clients, CSC is well positioned to deliver results that meet key business goals.”

Computer Sciences Corporation is a leading global information technology (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 78,000 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 $14.6 billion for the 12 months ended Sept. 29, 2006. For more information, visit the company’s Web site at www.csc.com.