Microsoft Security Essentials, available from http://www.microsoft.com/security_essentials/, protects from viruses, spyware, and other malicious software.
It Microsoft Security Essentials is free to "use any number of copies of the software on your devices in your household licensed for use only by people who reside there or for use in your home-based users, and "small businessbusinesses" that install it on up to 10 devices (see http://www."; for microsoft.com/security_essentials/eula.aspx#mainNav). For other use cases Microsoft's equivalent product is Forefront Client Security.
== WPKG Package ==