Microsoft is introducing a new anti-malware service called Microsoft Security Essentials. Available free of charge for genuine Windows-based PCs.
Microsoft Security Essentials is designed to help protect consumers against viruses, spyware and other malicious software.
The product requires no registration, trials or renewals and is available for download via http://www.microsoft.com/security_essentials .
Microsoft Security Essentials is compatible with Windows XP SP2 or SP3, Windows Vista and Windows 7 including Windows XP mode on both x32 and x64 PCs.