Prevention is the key feature of Comodo Internet Security
Comodo Internet Security (CIS) is an all-in-one security program that uses leading technology in avoiding computer problems. It does not only center on detecting viruses, malware, spyware, etc., but also focuses on prevention, which is commonly ignored by conventional security programs.
Among its components are Firewall, Defense+ and Memory Firewall. These components help protect your computer against intrusions, unknown malware, and data theft which, if undetected, may result to system damage and computer crashes. The program also includes an Antivirus, Online Scanner (for suspicious files), and Threatcast (gives the user an idea whether an action is safe or not).
This security suite is not only easy to use but it also allows users to choose which components they wish to install and gives them the ability to activate/deactivate the components based on their preference.