"Windows Security Center is leveling the playing field and helping customers find more options for "protection."
More technical details on kernel protection.
What I find frustrating is that products like (cough - certain really big AV firms)disable alerts from Windows Security Center (and if you uninstall their product, they generally fail to re-enable it.) thus preventing the end user from ever seeing the several other, excellent - and free - choices for AV protection presented by the WSC. None of which, by the way, are a Microsoft product . . .