` : First, what is ``1/31/15``? (If that's a date, you didn't edit on 31 January 2015.) :Second, ``backed out``? Do you mean ``reverted``? :Third, ``This was not 'original research'`` means you have a source ready at hand. Then, please cite that source! Oh, and should you encounter original research; delete it; don't sync it. :Fourth, I am looking at your edit; it didn't say ``MSE has been subsumed/replaced by Windows Defender in Win8``. It said they were the same. In general, one should think with his brain, not with his eyes. Just because Windows Defender and MSE look alike doesn't mean that they are the same internally. (The look of MSE comes from the obscure Microsoft Forefront Client Protection.) But Windows Defender on Windows 8 is definitely not MSE. It has an ELAM driver added and has no network intrusion prevention module. They all consume the same AV database but that doesn't mean they use it the same way. :  `