Microsoft’s Free Web Virus Scanner a Privacy Concern?
By default, the virus scanner reports back to Microsoft with details of the machine, including the operating system (its product ID, among other things), installed drivers, and installed applications. Microsoft said that the collected data would be used to “help us improve scanner features and make better recommendations.” The user can choose to not transmit some of this data by clearing a check box in the scanner window.
“If you elect to share your results with us, all reported information is anonymous. No personal information is collected,” Microsoft said.