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Comodo AntivirusScreenshot 

 

Comodo Antivirus is the free way to completely rid your computer of viruses, malware, Trojans, worms and other Internet threats. Version 4 takes security to the next level by introducing auto-sandboxing of untrusted files - totally isolating unknown threats in a virtual operating environment where they cannot do harm. Easily schedule full virus scans on any drive or file - all in one attractive user-friendly interface, and all for free

Screenshot of Comodo Antivirus