I am terribly sorry about what happened to @lizziesworld. It can happen to any of us (I have known already way too many cases here), but it shouldn't.
It is hard for me to believe that the brilliant minds that brought us the blockchain with all its complexity cannot find more effective ways to protect us. (I know all what has been said about measures every one of us must take to prevent ID theft, but, we also know that even taking measures it does happen)
There got to be a way to at least track the mf who did it and recover what was stolen.