There have been cheaters in every mmorpg I've established myself in, and then in c-RPG.
Although the previous cheaters were mostly chinese and portuguese in the mmo's not all were. Some cultures view cheating as a legitimate cunning to gain an advantage over your virtual foes.
In reality it's just breaking the rules the game was built around which made it that game in the first place, completely ruining what the developers intended, although saying that some exploits are created by devs purposely, for their personal use as GMs.