The Battle.net team let us know that over 20,000 Battle.net accounts have been banned. All of these accounts were associated with 8,500 accounts using the "Chest Hack" that appeared in the user community over the past week. In addition to this hack's effects on the player economy, its use directly affected the stability of Diablo II realms, causing a number of dramatic performance issues. This is in keeping with their commitment to provide the highest possible level of quality for their legitimate users.