Here is a link to Microsoft's Beta version of spyware. I have used it and I think its a good piece of software from a user perspective. Its free and easy to install. It has worked fine so far and I am happy. I must mention that when you install this version it asks your permission to check the authenticity of the Windows software installed on your computer.
Washington DC Small Business, Social Media, Technology, Communications, Marketing and Conversations with Shashi Bellamkonda Vice President Marketing at Leap | Marketing Leader Driving Business Growth & Customer Exp | Startup & SMB Advisor