The BBC reports that Microsoft has disconnected approximately 600,000 Xbox users from Xbox Live because the devices they are using have been modified, either with software or with new chips, to play pirated games. 'Microsoft confirmed that it had banned a "small percentage" of the 20 million Xbox Live users worldwide. Microsoft said that modifying an Xbox 360 console 'violates' the service's 'terms of use' and would result in a player being disconnected.