Blizzard bans those who cheat against themselves

Heavy handed enforcement of the cheat rules
Users who used cheats in the single player campaign mode and AI skirmish mode are being treated as if they had cheated in a multiplayer online match. Some have had their accounts were suspended and for others their CD keys were disabled and they were completely locked out of playing even campaign mode.
While many expected Blizzard to get heavy with those who use cheats and illegal mods, the idea that they could lose control of a game they paid for because they cheated against themselves is really bizzare.
Blizzard said that it was taking cheating very seriously and if you’re caught cheating in Starcraft 2, Blizzard, as per the terms in the EULA reserves the right to ban your battle.net account and/or CD key from ever playing again, online or off.