Use of instant messaging applications-like AOL Instant Messenger, Yahoo! Messenger, MSN Messenger and ICQ-and peer-to-peer applications has grown significantly. Although the benefits of real-time communication offer a productivity benefit to corporate environments, instant messaging and peer-to-peer applications add significant vulnerabilities and risks to an enterprise's security posture. New security risks include bandwidth misuse, additional vectors for virus and worm attacks, the ability to transfer files and the ability to take control of other machines.

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