Believe it or not, but the recently introduced, free security solution from Microsoft manages to hold its own against fully-fledged, paid security suites from heavyweight players on the security market, at least when it comes down to generic detection and heuristic techniques.

In fact, Microsoft Security Essentials 1.0, formerly codenamed Morro, fared better than the products from security companies that were fast to downplay the relevance of a free basic solution from the Redmond company.

http://news.softpedia.com/news/Microsoft-Security-Essentials-vs-Kaspersky-Nod32-BitDefender-Symantec-McAfee-128482.shtml

Microsoft Security Essentials can be downloaded here:
http://microsoft-security-essentials.en.softonic.com/
(Note: This is not a Microsoft Download Site)

 Urs