Updated: Best antivirus: 10 antivirus packages reviewed and rated

IntroductionIt's a dangerous world, and every PC needs antivirus software to keep threats at bay: it's an absolute essential.Don't assume that Microsoft's free tools are enough, either. Microsoft Security Essentials (or Windows Defender with Windows 8.1) is compact and easy to use, but independent testing labs such as AV-Comparatives report that Microsoft's protection is very poor.This doesn't have to be a problem if you're short of cash. Opting for a free solution doesn't have to mean compromis