Sorry for bumping the old thread but I would like to add some cents. The best way to avoid infecting your PC is to buy or download games only from official websites such as Steam or directly from the website of the developer. If you use uTorrent or any other websites that offer downloading games or software you risk to get viruses and it is not a secret. And sometimes it will not be enough to have the installed antivirus. Sometimes they do not help and even bring more problems than viruses and it cna be hard to uninstall them. So the only way I see is to buy the game at store and install it or download it from official websites.