The question has been closed for the following reason "Duplicate Question" by TheTechDude Jul 26 '12 at 11:25
It's comodo, For the third time it is awarded as no.1 product from matousec's proactive security challenge.It has the antivirus and firewall features enabled in it. To know about this try the below link. http://www.comodo.com/home/internet-security/free-internet-security.php
This answer is marked "community wiki".
answered Jul 26 '12 at 08:33
unplug your router&modem this is the best security, no one with an unpluged router and modem has ever reported getting a virus from the internet ..
answered Jul 26 '12 at 09:28