Rivals ding the free antivirus software, but AV-Test.org says it's 'very good'

Microsoft's free security software passed a preliminary antivirus exam with flying colors, an independent testing company said today.

AV-Test GmbH tested Microsoft Security Essentials, the free software Microsoft launched yesterday in beta, on Windows XP, Vista and Windows 7, putting it up against nearly 3,200 common viruses, bot Trojans and worms, said Andreas Marx, one of the firm's two managers.

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