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McAfee and Symantec could be affected as Microsoft moves to provide free antivirus software. If the software, code-named Morro, successfully protects against viruses, analysts said, it could mean an exodus from well-known security brands.

On Tuesday, Microsoft announced a security offering focused on protecting against malware. The software giant is addressing what it sees as a growing need for a security solution that meets the unique needs of emerging markets and smaller PC form factors.

McAfee and Symantec could be affected as Microsoft moves to provide free antivirus software. If the software, code-named Morro, successfully protects against viruses, analysts said, it could mean an exodus from well-known security brands.

On Tuesday, Microsoft announced a security offering focused on protecting against malware. The software giant is addressing what it sees as a growing need for a security solution that meets the unique needs of emerging markets and smaller PC form factors.

Microsoft plans to stop accepting paid subscriptions to Windows Live OneCare in mid-2009. The security software is slated to be replaced by a free offering code-named Morro, which will focus on providing consumer PCs with core protection from viruses, spyware, rootkits, trojans and other forms of malware.