It's not an update, it has been in there from the start.

They won't ban on IGN alone. Your in game name means nothing. How many people have the name 'Bob'?

The easiest way people are getting caught right now is by being reported by other players. If you attack enough people with a robot-like attack, someone is bound to notice and report you. IMHO this bot would benefit greatly from more 'humanized' actions.