Comodo Internet Security 2011 is the free, multi-layered, security application that offers complete protection from viruses, Trojans, worms, buffer overflows, zero-day attacks, spyware and hackers. Built from the ground upwards with your security in mind, Comodo Internet Security combines powerful Antivirus protection, an enterprise class packet filtering firewall, advanced host intrusion prevention, application control and anti-spyware in one supremely powerful application. The latest version sees a major leap forward in security and usability with the addition of cloud based virus-scanning and behavior analysis of unrecognized files - making CIS 2011 unbeatable at detecting zero-day attacks. Under default settings, unknown and untrusted files are automatically scanned by our cloud-based virus scanners then, while the file undergoes behavior analysis on our cloud server, it is run in a sandbox on your local machine so that it cannot modify or affect data on your 'real' system....