Windows Defender

Windows Defender has been trying to protect PCs from malware since 2006, but its early years were far from successful. Independent testing showed the app trailing far behind just about everything else, with dire detection rates which would have left you exposed to a host of threats.  Microsoft has invested a great deal of time and effort in improving Defender in recent years, though, and it's clearly paying off, with the package climbing the test rankings and now outperforming some big secu