A: Microsoft produces a report that provides detailed findings on the state of Microsoft security initiatives and exploits in the previous six months.
As of publication time for this FAQ, the most recent report can be found at “Microsoft Security Intelligence Report volume 11.” The main site can be found at Microsoft Security, which has links to all the previous reports.
Need more FAQs about System Center? Maybe virtualization? Or other Windows issues? See John Savill's FAQs for Windows!