Windows PCs don't exactly have a reputation for security, but Microsoft's trying to change that. When smug know-it-alls claim that Windows PCs have more viruses than a public toilet, Microsoft points to the PatchGuard driver signing system on 64-bit Windows as their way of saying "Nuh-uh!" PatchGuard keeps the baddies from getting high-level privileges on Windows machines. Bad news: Kapersky's reporting that a new malware program that targets Windows 64-bit users has figured a way around the protection. The malware is part ...