PC Security
Security scanners, tools, and safety guidelines for your PC, laptop, or mobile device.
Find them all at https://www.microsoft.com/security/pc-security/default.aspx#Safety-products-and-scans
Read my favorites blogs:
Designing a backup less Exchange 2010 Architecture
Microsoft Exchange 2010 CAS Array – Steps and Recommendations
Appear Offline in Microsoft Office Communicator Server 2007