It is used as a more rigorous second opinion in cases where daily-use programs are suspected to have missed an infection. It is not intended to be used as a replacement for these tools, as it does not provide real-time protection, cannot update its malware definitions, and expires after ten days.[5] It uses the same detection engine and malware definitions as Microsoft Security Essentials and Microsoft Forefront Endpoint Protection.[6][7]
License restriction
As of 24 July 2011[update], Microsoft Safety Scanner's end-user license agreement permits personal usage of one copy for the development and testing of user programs.[3]
References
^"System Requirements". Microsoft Safety Scanner website. Microsoft Corporation. Retrieved 22 April 2011.