Factory Reset Protection was introduced with Android Lollipop, and, like Apple's iCloud Activation Lock, it's supposed to make it really hard to resell a stolen Android phone. The gist is that when you use Android recovery menu to reset a phone to factory settings, the phone will require upon reboot that you sign in using a Google account you previously used on the device before resetting it. If someone steals your phone and wipes it, they need your Google account for it to be anything but a brick.
Well, it appears that a flaw in Samsung's phones lets potential thieves around this security measure, and it looks like the workaround (via RootJunky) takes just about five minutes to pull off... Read more of this post
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