That's the IT security industry for you, way to many people there love to play to that "never grown up/out of script-kiddy morals" stereotype.

Also strange not to mention potential state actor. Each time an attack in carried on US targets there is a premade list of countries from which it supposedly come, and here nothing.

It's a troll because they gave out the number of Ayatollah Khamenei's office as the passenger complaint number.

I feel like vandalism could count as a troll, at least in the original sense of some action taken to provoke an emotional reaction.

Say, for example, spray painting something that would make a particular politician mad along a parade route that they're going to be taking.

It might be a non-central example, but I think it belongs in the category.