Sony’s PlayStation Network has been hacked, resulting in a the theft of critical customer data such as username, passwords, and credit card numbers. The stolen information in turn can be utilized to further victimized affected customers on an individual level. For example, as many people tend to stick with the same user name and password, an attacker can then use this information to log into other online accounts that the user might have signed up to such as with a bank.
This is not the first time that Sony has been compromised, as it was also the victim of an SQL injection attack back in 2008. Though the consequences of the most recent attack is the most severe give the amount of sensitive data stolen, and the potential number of customers that might fall further victim to subsequent fraud and theft activities as a result.
http://www.theregister.co.uk/2011/04/26/sony_playstation_network_security_breach/