Microsoft has released a public beta of their new antivirus software Security Essentials a few days ago. The beta was limited to 75000 participants; A number that was reached rather quickly. Security Essentials are at the moment not available on the Microsoft website anymore but it is expected that the final version of the antivirus software will make its debut before the release of Microsoft’s next operating system Windows 7.
Antivirus Software Microsoft Security Essentials Tested 
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