Top 3 Anti-virus programs?

[Amazing Aura]

I need of the best antivirus programs that can protect your computer from trojan and viruses. Like a firewall, because my PC has a trojan backdoor thing..

 

[richc46]

Welcome
Used by me and most of the staff here. Microsoft Security Essentials
Malwarebytes for a once a week scan
Secunia to make sure all your software is up to date, for security
Free Computer Security - Personal Software Inspector (PSI) - Secunia
Win Patrol to be notified of any changes made to your computer
These are all free

 

[DeaconFrost]

Unless you are trying to get infected, MSE as an active scanner, and Malwarebytes as a passive, on-demand scanner is about all you need.