clipped from: gizmodo.com Essentially, Security Essentials seems a little bit like a lite version of Live OneCare (though it's technically not related). Since this version is free, it is certainly worth a shot—and it definitely poses a threat to Symantec and McAfee. Plus, they note that there will be no registrations or renewals and the software will be updated automatically. As far as availability is concerned, Morro will can be downloaded directly from Microsoft starting on June 23rd in a limited public beta for XP, Vista and Windows 7 users.