News Release-- September 05, 2002

CSC PRIME ALLIANCE RECEIVES OFFICIAL RECOGNITION FOR SOFTWARE ACQUISITION PROCESS EXCELLENCE IN SUPPORT OF IRS MODERNIZATION

EL SEGUNDO, Calif., Sept. 5 -- Computer Sciences Corporation's (NYSE: CSC) PRIME Alliance has become the first organization in the world to be successfully evaluated against Level 3 of the Software Engineering Institute's (SEI) Software Acquisition Capability Maturity Model. The model was developed to help improve the software acquisition process so that organizations are better able to achieve acquisition goals.

Achieving the SA CMM Level 3 rating means that the CSC PRIME Alliance uses standardized, disciplined management processes in several critical process areas throughout the enterprise life cycle as it modernizes the American tax system in partnership with the Internal Revenue Service. These key process areas include training programs, acquisition risk management, contract performance management, project performance management, and process definition and maintenance. This model was first published in December of 1996 to aid government agencies in managing information technology contractors more effectively.

"The SA CMM Level 3 rating is a historic achievement for the IRS Modernization Program," said Fred Forman, Associate Commissioner of IRS Business Systems Modernization. "It underscores the importance the IRS has placed upon having the best possible program management to accomplish the modernization of the IRS's systems and business processes."

According to Stephen Kalish, president of CSC's Civil Group, "This accomplishment demonstrates that the CSC PRIME Alliance is uniquely qualified to manage and deliver business solution technology projects with the highest potential for success. This distinction is especially noteworthy since it was achieved in partnership with the IRS on a modernization effort of unprecedented scope."

The Software Engineering Institute is a federally funded research and development center which provides leadership in advancing the state of the practice of software acquisition and software engineering to improve the quality of systems that depend on software. The SEI helps organizations to improve their software acquisition and engineering management practices in maturing their people, process and technology assets to improve long-term business performance, and evaluates the progress of organizations in putting these management improvements into effect.

The IRS Modernization Program is a partnership between the IRS and the CSC PRIME Alliance that has created a blueprint clearly defining how business operations will be improved and how the IRS will take advantage of technology to provide better service to the public.

About the CSC PRIME Alliance

The CSC PRIME Alliance combines Computer Sciences Corporation's global capabilities with the specialized business, technical and consulting capabilities of some of the world's largest and most respected companies. The CSC PRIME Alliance includes IBM, KPMG, Northrop Grumman Information Technology, SAIC and UNISYS. On Dec. 9, 1998, the CSC PRIME Alliance was selected to enter into a strategic partnership with the Internal Revenue Service to modernize the U.S. tax system.

About CSC

CSC, one of the world's leading consulting and information technology (IT) services firms, helps clients in industry and government achieve strategic and operational results through the use of technology. The company's success is based on its culture of working collaboratively with clients to develop innovative technology strategies and solutions that address specific business challenges.

Having guided clients through every major wave of change in information technology since 1959, CSC combines the newest technologies with its capabilities in consulting, systems design and integration, IT and business process outsourcing, applications software, and Web and application hosting to meet the individual needs of global corporations and organizations. With more than 66,000 employees in locations worldwide, CSC had revenues of $11.5 billion for the 12 months ended June 28, 2002. It is headquartered in El Segundo, Calif. For more information, visit the company's Web site www.csc.com.