> To me the op is no different from people who participate in ARGs.

Except, you know, the game part of ar_G_. Real life is not a video game. If you live as if it is, something bad is probably going to happen to you eventually. Brute forcing something that doesn't belong to you is not just bad form, it's stupid, and depending on what it happens to be, possibly illegal.

Does that make the police harassing him OK? Perhaps not. Is any part of this story even true? Also perhaps not.