This is really interesting, you might suspect that someone at facebook had looked into files that they should have not. But the fact that it’s the founder of the company doing it, and that it does not seem to be a rumor and that there is more then one person that is backing up the claims. The one incident you could think that there really might not be any substance behind the claims or evidence. But with a second claim of the same thing happening again, I wonder how many other times that this has been done in-between or since.
There has to be someone at facebook that knows what happened and what information was accessed by who. With the information that is kept in the databases at facebook, I can’t believe that there is no audit trail of what user has accessed the information.