There is probable cause involved in an arrest, though. I think that's an important distinction between doxing and becoming part of the criminal justice system. You can certainly argue that there are problems with the system, but it's not the same as just doxing someone on the internet—not in a legal sense, or in a practical sense.

Journalists naming people as part of their work is a third category, and probably the one this falls under. It's dangerous territory, and Krebs stands to lose a lot (i.e. credibility, lawsuits, possible reprisals) by making this allegation if it turns out he didn't do his job right.