The PlayStation Network breach exposed 77 million customers' personal information, forcing some three million UK customers to change their bank account details and obtain new credit cards. 

Sony’s PlayStation Network is reported to have 70 million registered users worldwide. On May 2, 2011, Sony issued a statement that 12,700 credit cards and 24.6 million user accounts were compromised. The stolen data included names, addresses, dates of birth, passwords, security questions and answers and credit card information. This compromise is said to be one of the largest and most high-profile online data thefts to date.