Sony's Kazuo Hirai provided some more information about the nasty PSN hack, largely reiterating the information that was provided last week. The company estimates that the information of approximately 10 million credit cards may have been compromised. However, Sony noted that there has been no evidence that the credit card data was in fact read and taken.
The company advised users to be cautious about the activity on their accounts and offers assistance in contacting local authorities to protect consumers from identity theft. If a cancellation of a credit card is necessary, Sony will cover the fees that may be involved to reissue a replacement card.
Somewhat disturbing is that the company admitted that a known but unpatched vulnerability in its servers enabled hackers to gain access to user data. According to Sony, while the vulnerability was generally known, its IT staff "was not aware of this specific vulnerability." Sony did not provide further details on which specific vulnerability it was.
Hirai told reporters that Sony expects to partially restore the PSN within one week and bring services such as PS3 and PSP gameplay, PS Home, movie rentals, and chat back online. Full services including the PlayStation Store will be available again within one month, Hirai said. He also noted that, as a sign of appreciation, Sony will be offering free downloadable premium content as a "welcome back" present to its users.
All users will be invited to join PlayStation Plus for 30 days free of charge, and PlayStation plus subscribers will be receiving 30 days of free service as well. A similar offer will be made to Qriocity subscribers.
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