Your antivirus should definitely have the ability to root out existing malware, but its ongoing task is to prevent ransomware, botnets, Trojans, and other types of nasty programs from getting a foothold. Read our reviews and pick the one that sounds right for you. We’ve put dozens of free and commercial antivirus tools to the test. The best third-party free antivirus tools are better than what’s built into Windows, and better than many products that cost money. Yes, we get that you don’t want to spend money on antivirus protection. And if a malefactor gets full access to your PC using a RAT (Remote Access Trojan) your social media account can endanger your whole friend list. You may feel different when your computer is bricked by a disk-encrypting ransomware attack, though. You may imagine that you don’t need antivirus protection because all you do with your computer is watch funny videos and post on social media.