Re: Surely a simple answer
> That old thing called System Restore. Or whatever they call it now. The
> same method that lets you uninstall an update would allow them to find out
> your previous settings and put them back in place. No data would need
> transmitting to MS for that.
Except your passwords have already been uploaded to Microsoft, replicated across a bunch of disks in multiple data centres, found their way onto backup tapes, and probably downloaded by your friends:
The only way to undo this is going to be to change your passwords absolutely everywhere.