Reviewed on Dec 29st, 2017
Update 2013 Microsoft Security Essentials is a new, free consumer anti-malware solution for your computer. It helps protect against viruses, spyware, and other malicious software. It's available as a no-cost download for Windows XP SP2 and higher, Windows Vista, and Windows 7. Comprehensive protection—Microsoft Security Essentials helps defend your computer against spyware, viruses, worms, Trojans, and other malicious software.