Microsoft released the final version 4.0 of Security Essentials. MSE provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software. You can download for Free and must run genuine Windows to install Microsoft Security Essentials. Before installing Microsoft Security Essentials, is recommend that you uninstall other antivirus software already running on your PC. Running more than one antivirus program at the same time can potentially cause conflicts that affect PC performance.
Download Microsoft Security Essentials 4.0
The name is similarity with the Microsoft Security Essentials, but in real is a fake virus named Security Essentials 2010, on which also the Redmond is warning all Windows users.
The fake anti-virus is a trojan Win32/Fakeinit: once installed does not just damage, showing a fake virus scan window instead try to close the system processes, also changing the security settings in the registry and the desktop wallpaper.
"Security Essentials 2010" and looks something like the image above. (click to zoom).
CA Anti-virus 2008 detects viruses, trojans and worms but not spyware and rootkits. It’s currently compatible to the 32-bit editions of Windows 2000, XP and Windows Vista.