If you would choose just _ONE_ security application, which would it be? And why? Say you're on Win 8 x64 and you cannot use Windows Defender in conjunction with anything else. It has to be WD or the other. What security application would it be? Remember guys, only ONE security solution! I'd myself pick AppGuard. Simply because it'd protect me against vulnerabilities and malware with zero impact and no need for updates. Your turn.