Last week Sony admitted that up to 77 million users of its PlayStation Network may have had their security compromised by a hack.
Now it has revealed that a further 25 million users may face a security compromise.
It seems that on 18 April, the day before PlayStation Network was hacked, Sony Online Entertainment PC games network was hacked. However, Sony did not find out about the breach until early on Monday and shut down the service shortly afterwards.
Sony Online Entertainment network hosts games such as "EverQuest".
Sony stated that the names, addresses, emails, birthdates, phone numbers and other information from 24.6 million PC games accounts may have been stolen from its servers as well as an "outdated database" from 2007.