Free security suite nailed 98 percent of samples, says AV-Test.org; Symantec touts its own test, which yielded only an 'average detection rate'

Microsoft's free Security Essentials antivirus software identified 98 percent of over half a million malware samples, an accuracy rating an independent testing company called "very good" today.
Germany-based AV-Test.org tested Security Essentials, the free software Microsoft shipped Tuesday, on Windows XP Service Pack 3 (SP3), Vista SP2 and the final code of Windows 7, against two different collections of malware, said Andreas Marx, one of the firm's two managers.
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Microsoft's Security Essentials scores 'very good' with independent tester | Security Central - InfoWorld