Sony fined over 'preventable' PlayStation data hack
24 January 2013 Last updated at 10:00 GMT
Sony Computer Entertainment Europe has been fined £250,000 ($396,100) following a "serious breach" of the Data Protection Act.
UK authorities said a hack in April 2011 "could have been prevented".
The Information Commissioner's Office (ICO) criticised the entertainment giant for not having up-to-date security software.
Director of the ICO, Simon Entwistle told the BBC Sony "could have done more".