Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. Space demand on the hard disk: only 17.63 MB.
Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology.
*Your PC must run genuine Windows to install Microsoft Security Essentials.
It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.
Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.
