So while going to the filing cabinet to get the file he'd been directed to, he leafed through other files too. Why not? They're all public information, since they're sitting here in the unlocked filing cabinet with all of the other public information files.
Turns out some of them were mislabeled, and were private information in the public information filing cabinet.
Not so weird, not so antisocial, not his fault, shouldn't be his problem.