Yes, I read your article (and can very well understand the paranoia). You have been helped in that the culprit can no longer do anything. At least not with your nickname... An "instance" helped you on Hive. Very good! And you knew who to contact, which was probably told to you by an active Hive user. Very good!
And that's what this article is about: What do we do when a Hive user asks us for help because someone is using their name on the Steem and stealing their content? I don't know and I don't get an answer that could help immediately in a concrete way, like you were helped. I don't want to say "Tough luck!" to anyone.