I borrowed an original Surface RT to try it out. I was granted administrative rights to the device with my Microsoft account (@outlook.com) and logged in.
Many months later the owner of the Surface RT reported that now on his home computer (which I have never touched) has my user with Read & Execute permissions on his c:\Users\UserName folder.
Is there any reason that permissions from a Surface would propogate/sync to another computer automatically? The owner of the Surface logs into the Surface and his home computer with the same Microsoft account.
Is there some part of the Microsoft account that syncs not only things like desktop backgrounds but also file and folder permissions across devices?