Naming and shaming is considered harassment. Since you like “legal” definitions, in the game Blizzard makes the “laws”. Their “law” is that naming-and-shaming on the forums is not allowed.
Edit:
Could I just report them on the forums?
- No, this is not an appropriate place for such reports and could be considered harassment itself. We do not allow what is considered “naming and shaming” and any such threads are likely to be edited or deleted. No investigations will be initiated as the result of a forum post and could result in the temporary loss of forum posting privileges.