Sony has confirmed another PlayStation Network hack with 93,000 accounts being affected.
Sony's chief information security officer, Philip Reitinger, posted details of the hack, which has also affected Sony Online Entertainment Networks, on the European PlayStation Blog this morning.
The hack was apparently carried out by testing "a massive set of sign-in IDs and passwords against our network database" which resulted in a 0.1 percent success rate for the hackers.
"The overwhelming majority of the pairs resulted in failed matching attempts," Reitinger explained. "It is likely the data came from another source and not from our Networks. We have taken steps to mitigate the activity.
"Less than one tenth of one percent (0.1%) of our PSN, SEN and SOE audience may have been affected," he continued.
"There were approximately 93,000 accounts globally (PSN/SEN: approximately 60,000 accounts; SOE: approximately 33,000) where the attempts succeeded in verifying those accounts' valid sign-in IDs and passwords, and we have temporarily locked these accounts.
"Only a small fraction of these 93,000 accounts showed additional activity prior to being locked. We are currently reviewing those accounts for unauthorized access, and will provide more updates as we have them.
"Please note, if you have a credit card associated with your account, your credit card number is not at risk. We will work with any users whom we confirm have had unauthorized purchases made to restore amounts in the PSN/SEN or SOE wallet."
The affected users will also get a "secure password reset" prompt email from Sony.
Finally Reitinger issued the following warning:
"We want to take this opportunity to remind our consumers about the increasingly common threat of fraudulent activity online, as well as the importance of having a strong password and having a username/password combination that is not associated with other online services or sites.
"We encourage you to choose unique, hard-to-guess passwords and always look for unusual activity in your account."
This most recent hack sounds small compared the massive PSN hack that Sony suffered back in April.
Last month Sony CEO Howard Stringer said that the PlayStation Network is 'more secure and better than ever' following the original hacks months before.