Blizzard Entertainment has announced that they have banned 320,000 user accounts in Warcraft III and Diablo II. Of course, that many accounts would not just vanish without reason and comes down to the simple user agreement that everyone must agree to before ever setting foot online.
Blizzard has refused to comment on what exactly the banned players were doing to deserve the banhammer but did post some advisory terms for all players to follow:
We would like all players to remember that abuse of unintended mechanics and/or use of third party programs is a violation of the agreement made when signing on to Battle.net, and can subject your account to disciplinary action up to and including a permanent ban of its access to the service. These types of activities can severely impact the stability of our servers, and we’ll continue to aggressively monitor Battle.net in order to protect the service and its players from the harmful effects of cheating.
It would be no surprise if a lot of these bans came from use of the Hacks Reporting Form that Blizzard provides to players.
Blizzard does have a policy of “fool me once” in which they will restore your account in 30 days if it’s your first offense. More than one offense is a lifetime ban however.