Earlier quoted context omitted.
I am not a lawyer, but I'd like to address your legal points. Just as I don't need a warrant to view a publicly available website, he shouldn't either. What you are proposing is that it should be illegal to view public pages in a certain order or time. What is the difference of me viewing 100 of my new crushes friends pages over 2 days vs 2 years? There isn't, but the first is rifling, the second is innocent curiosit…
Wouldn't communicating an "untrue statement of fact" that certain people are leaders of an allegedly law-breaking group to government officials or other people constitute defamation (assuming that their reputations were harmed as a result)?
1. The first is that he did not release the report publicly, which is what would cause the defamation. Anonymous did. Thus he wouldn't be responsible for the release of the data. The issue here is really the publishing of it. He did not publish it, and selling it to a private law enforcement agency, in my mind at least is not publishing it.
2. The second issue is related to false police reports. In America, it is illegal to file a false police report. However, this is not what is happening here. He is not claiming to police that a crime was actually committed, instead he is providing information related to that crime. He is basically selling criminal leads to law enforcement. He's basically doing a crime stoppers like program, but generating the leads himself and going straight to the feds.