MCI Completes Acquisition Of NetSec

ASHBURN, Va., February 28, 2005 - MCI (NASDAQ: MCIP) today announced the completion of its acquisition of NetSec, Inc., a privately-held international provider of managed and professional security services, for $105 million in cash. This acquisition is a significant step in MCI's strategy to expand its existing security services portfolio to offer a more diverse array of advanced managed security solutions and consulting services to its high-end enterprise and government customers around the world. "Network and information security are the top priorities of businesses and governments everywhere," said Jonathan Crane, MCI executive vice president and chief strategy officer. "This acquisition enables MCI to effectively address these concerns by delivering innovative solutions for the security, compliance and risk management challenges our customer face through the industry's strongest network protection capabilities." While this acquisition positions MCI to focus additional resources on the fast growing high-end corporate segment of the security market, it is complementary to its existing strategic security partnerships. About MCI
MCI, Inc. (NASDAQ: MCIP) is a leading global communications provider, delivering innovative, cost-effective, advanced communications connectivity to businesses, governments and consumers. With the industry's most expansive global IP backbone, based on the number of company-owned points of presence, and wholly-owned data networks, MCI develops the converged communications products and services that are the foundation for commerce and communications in today's market. For more information, go to www.mci.com.