Microsoft Security Intelligence Report
The Microsoft Security Intelligence Report provides a comprehensive understanding of the types of threats Windows customers face today so they can take appropriate action to help ensure they are better protected. The report highlights trends observed over the past several years, leveraging data collected by Microsoft between July 1 and December 31, 2006, from numerous sources including the Microsoft Malicious Software Removal Tool (MSRT) and Windows Defender.
Microsoft Security Intelligence Report is available here https://go.microsoft.com/?linkid=6755495