2 Wicc
See the attachment. This is just for you. Is that enough proof?
And I know of a few other similar stories, which are less publicized. And I also suspect some others based on indirect clues.
In my opinion, maphacking against a maphacker is not a sin. In fact, for this reason, I refused to play in the tournament finals with Britva twice because without maphacking, there is an imbalance, and with maphacking, I don't want to spoil my karma.