Microsoft and Sony have denied claims that they were hacked last week.
Online group 'DerpTrolling' said it had infiltrated Xbox Live and leaked the usernames and passwords of almost 1,500 members. It went public with the details, as well as what it claimed was the account info for over 2,000 PlayStation Network users and another 2,000 2K Games accounts.
Sony and Microsoft's denials suggest the claims were a hoax.
"We immediately investigated reports regarding some Microsoft Accounts including Windows Live and Hotmail and can confirm that no Microsoft site or service was compromised," Microsoft told GameSpot.
"Microsoft takes account security and privacy seriously. Should we identify any specific account at risk for any reason, we will take action to protect the account. To help keep your information safe, we encourage you to set strong passwords, change passwords regularly and avoid using the same password for multiple accounts."
It also directed users to microsoft.com/security for more information.
Sony issued its denial over the weekend. "We have investigated the claims that our network was breached and have found no evidence that there was any intrusion into our network," the company told Joystiq. "Unfortunately, internet fraud including phishing and password matching are realities that consumers and online networks face on a regular basis. We take these reports very seriously and will continue to monitor our network closely."
The leaks may have been faked by repurposing customer login details obtained in previous breaches.
Sony's PSN was notoriously hacked back in 2011. Apple's iCloud was also breached earlier this year, resulting in the leaking of hundreds of celebrity nude photos.
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