Sony announced hackers have breached about 60,000 PlayStation Network accounts as well as 33,000 Sony Entertainment accounts. According to details released by Sony Chief Information Security Officer Philip Reitinger, hackers obtained a large amount of user data from other companies or websites, and used a brute-force attack to hack the Sony accounts:
According to Sony, the hackers obtained a large amount of user data from other companies or websites. The hackers were attempting to sign-in to numerous accounts using ID and password pairs, and while the “overwhelming majority of the pairs resulted in failed matching attempts” there were still approximately 93 thousand accounts (globally) in which the hackers succeeded.
Of those 93 thousand accounts, 60 thousand were PSN accounts and 33 thousand were SOE accounts. Reitnger had this to say regarding the hacked 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.”