Introduced in September 2009, Microsoft Security Essentials (MSE) replaced Microsoft's antivirus subscription service (see Windows Live OneCare) and its Defender antispyware software (see ...

Microsoft Security Essentials 4.0 does a decent job protecting a clean PC, but in testing its cleanup of already-infested systems wasn't thorough. You can get better protection for the same price.

TL;DR: This Microsoft bundle includes lifetime access ... operating system that’s as smooth as it is secure. With advanced security features like BitLocker encryption, seamless collaboration ...