I think the confusion has to do with lack of knowledge regarding mining, by "nicehash hacker" I mean the famous hacker who uses the following Nicehash JP server and mines under the wallet 3BjMWfED7RJvtBPPikJpweDT6A9xRW952x, you can read about here and here.

In fact, even without reading a thing, if you weren't reading out of context you would have understood that this whole thing has NOTHING to do with Nicehash itself being hacked and it simply implies a hacker who USES nicehash, this is the second time you do this and now I almost certain that you have poor reading comprehension, sadly I can't help you with that.