The software product, codenamed "Morro" after a beach in Sao Paulo, Brazil, is already being tested by

Microsoft employees and a trial version will be made available in September according to sources

familiar with Microsoft's plans. Microsoft has officially stated that Microsoft Security Essentials

would be available by the end of 2009 at the latest. The company has been trialing internal versions

since June 1.

This is basically an alpha of the upcoming free Microsoft antivirus. 3 installers are included. XP,

Vista and 7 x86 and Vista and 7 x64. Please look at the file name to determine which one to install.

click here to download