Comodo Internet Security

Features

• Antivirus, Anti-Spyware, Anti-Rootkit & Bot protection
• Defends your PC from Internet attacks
• Detects and eliminates viruses
• Prevents malware from being installed
• Auto Sandbox Technology™
• Easy to install, configure and use
• Free to both business and home users

 http://www.comodo.com/home/internet-security/free-internet-security.php