Tokyo: Sony said on Wednesday that intruders staged a massive attempt to access user accounts on its PlayStation Network and other online entertainment services in the second major attack on its flagship gaming site this year.
The Tokyo-based company temporarily locked about 93,000 accounts whose IDs and passwords were successfully ascertained by the blitz. Sony sent email notifications and password reset procedures to affected customers on the PlayStation Network, Sony Entertainment Network and Sony Online Entertainment services.
Credit card numbers linked to the compromised accounts are not at risk, Sony said. It has "taken steps to mitigate the activity" and is investigating any wrongful use of the accounts themselves.
"Less than one tenth of one per cent" of the service's customers may have been affected, Sony said in a statement.
The announcement follows an embarrassing data breach in April, which compromised personal data from more than 100 million online gaming and entertainment accounts and forced PlayStation Network to be shut for a month.
Sony was subsequently criticised for lax security and acting too slowly to inform customers as it grappled with one of the largest-ever security thefts.
Sony confirmed the latest incidents after its security systems detected an unusually high number of login attempts that failed, said Sony spokesman Sean Yoneda. The company suspects that those responsible obtained large data sets from other companies or sources, which were then used to try to access Sony accounts.
"What happened in April was a breach on our servers as we said in our announcements," Yoneda said. "But this time around, there was no intrusion on our servers. This was ... taking someone else's identity and trying to use that to access our services."
The unauthorised access attempts occurred between October 7 and October 10 and targeted accounts globally. The company said it is unclear whether the attempts were carried out by a single individual or multiple parties.
Sony's customer service centers around the world have not seen a spike in user calls related to the incidents, Yoneda said.
Under Chief Executive Howard Stringer, Sony aims to more deeply connect its hardware, content and services. Executives have said the hacker attacks in the spring did not derail that core strategy.
The PlayStation Network bounced back relatively quickly, with the vast majority of subscribers returning after Sony began restoring online gaming services in May.
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