Reuters Extends Global Security Agreement With MCI

MCI’s NetSec Managed Security Solution Includes Global Managed Firewall and Intrusion Detection Monitoring

ASHBURN, Va., December 15, 2005- MCI, Inc. (NASDAQ: MCIP) today announced that Reuters, the global information company, has extended its contract with MCI to monitor Reuters’ global enterprise network providing early warning threat identification and detection capabilities. With extended surveillance over its global network, Reuters will be able to enhance its visibility into the threat management landscape and better safeguard its key corporate sites worldwide.

Under terms of the new three-year deal, MCI will continue to monitor Reuters’ managed firewall and network-based intrusion detection devices located at sites in the United States, Europe and Asia. Reuters plans to deploy additional intrusion detection and intrusion prevention devices to meet its stringent security objectives.

“Our network-based real-time security alert service is a critical component of Reuters’ overall security management framework,” said Chris Sharp, vice president of NetSec Security Services for MCI. “Leveraging our expansive geographic reach, Reuters can take advantage of our global threat identification and early warning systems so that viruses and other threats are stopped before they reach the enterprise border.”

“MCI brings a wealth of security expertise and intelligence to the table both at the Internet backbone and enterprise network level, which is crucial for a global organisation like Reuters,” said Simon Riggs, Global Head of IT Security Operations, Reuters. “With early threat detection intelligence, we can help mitigate an enterprise-wide problem before a network threat affects our employees, customers or partners.”

MCI provides NetSec cloud-to-core, global security services that helps enable corporations and government agencies to assess risk, manage threats, ensure regulatory compliance and reduce complexity. The NetSec Security Services leverage Finium™, a security integration platform that aggregates input from devices, correlates it with worldwide intelligence and fuses it into higher-level, risk-relevant security knowledge.

About MCI, Inc.
MCI, Inc. (NASDAQ: MCIP) is a leading global communications provider, delivering innovative, cost-effective, advanced communications connectivity to businesses, governments and consumers. With one of the most expansive global IP backbones 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.

About Reuters
Reuters (www.reuters.com), the global information company, provides indispensable information tailored for professionals in the financial services, media and corporate markets. Its trusted information drives decision making across the globe based on a reputation for speed, accuracy and independence. Reuters has 15,300 staff in 91 countries, including staff from the acquisition of Moneyline Telerate (MLT) in June 2005. It also includes 2,300 editorial staff in 196 bureaux serving 129 countries, making Reuters the world’s largest international multimedia news agency. In the 2004 Annual Report and Form 20-F, Reuters Group revenues were £2.9 billion.

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Janet Brumfield

MCI Public Relations

MCI, Inc.

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