Need some free Antivirus for home?

Microsoft just launched Microsoft Security Essentials…

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

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. 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.

Official site: https://www.microsoft.com/security_essentials

https://blogs.technet.com/mmpc/archive/2009/09/29/introducing-microsoft-security-essentials.aspx

Security Essentials engine and updates are backed up by the Microsoft Malware Protection Centre (MMPC) which provides world class antimalware research and response capabilities that support Microsoft’s range of security products and services. With laboratories in multiple locations around the globe including Melbourne – Australia, Redmond - USA, Dublin - Ireland, with additional researchers in Japan, California, New York and other locations the MMPC is able to respond quickly and effectively to new malicious and potentially unwanted software threats wherever and whenever they arise.
Learn more about the Microsoft Malware Protection Centre (MMPC)

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Enterprise protection

 
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Consumer protection

Learn more about Microsoft Security Essentials