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Sony denies PSN details offered for sale

Plus, clarifies password encryption details.

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Image credit: Eurogamer

Sony has denied reports that a group has attempted to sell back users' credit card numbers stolen during the recent PSN security breach.

"One report indicated that a group tried to sell millions of credit card numbers back to Sony," communications chief Patrick Seybold wrote on the PlayStation Blog.

"To my knowledge there is no truth to this report of a list, or that Sony was offered an opportunity to purchase the list."

Seybold also clarified how Sony had stored users' passwords, explaining that though they weren't technically encrypted, they were not kept as cleartext either.

"While the passwords that were stored were not 'encrypted', they were transformed using a cryptographic hash function," he explained.

"There is a difference between these two types of security measures which is why we said the passwords had not been encrypted. But I want to be very clear that the passwords were not stored in our database in cleartext form.

"For a description of the difference between encryption and hashing, follow this link," he added.

Sony aims to restore some PSN services this week, with a number of "welcome back" offers detailed over the weekend by Sony boss Kaz Hirai.

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