I've accidentally used it on Multiplayer once, but I don't use Online anymore, and deleted my save data just incase(I already beat the game anyways, and feel like replaying it already).
I've read up in the Agreement thing when you start that the makers can take the game away, or restrict access to using online, so those cheating might either just get a regular online ban, or a complete game ban. I originally didn't intend to go online with it though, so yea, I just stay offline completely now, because of that. Can't say the same for people who mod the game/single player though, I didn't bother completely reading more.