Microsoft implements two-step verification on accounts

... activities, and account abuses. It will implement verification on all the products and services that use a Microsoft account, like Windows, Windows Phone, Xbox, Outlook, Skype, and SkyDrive. The two-step verification will ask for two pieces of ...

http://www.washingtonpost.com/business/technology/microsoft-implements-two-step-verification-on-accounts/2013/04/18/82df534a-a7b5-11e2-9e1c-bb0fb0c2edd9_story.html