chadz is a softhearted equus africanus asinus, obviously the best way would be to name and shame then permaban with no appeal, like practically every single other normal game out there handles cheaters.
Which is an incredibly stupid way to deal with it, because it doesn't differentiate the guy who used it for the last 3 months from the guy who tried it once for an hour.
The former is a cheating scumbag, the latter might be a guy who made a stupid "mistake" who in no way worse than a serial leecher (hardly permabannable) or a repeat TKer (permabannable after several offenses).
If someone thinks there is no difference between the two, he's either too dumb to understand or suffers from severe infallibility complex.