Comodo Internet Security provides advanced prevention-based Default Deny Protection (DDP) technology to prevent malware from getting a foothold on your PC.
It includes an extensive white-list of safe executables called the 'Comodo Safe-List Database.' This database checks the integrity of every file and application, asking for access to your PC. It will alert you to potentially damaging applications before they are installed. This method is a ground-breaking method of protecting your PC. Traditionally firewalls only detect malicious applications from a blacklist of known malware - often-missing new forms of malware created and launched daily.
Comodo Internet Security is continually updated, and currently, almost 3,000,000 applications are on the Comodo Safelist. Put simply, the right stuff gets in, and the bad stuff gets nowhere near your PC's insides.
Avast! Free Antivirus is the perfect package of applications for people who send e-mails and surf popular websites to protect their computers from a virus infection or other malware threats. Be sure to see How to Install Avast as a Lightweight Antivirus.