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A hacker group has claimed it has attacked the Sony network and stolen more than 1 million passwords, e-mail addresses, and other information.

The hackers, who call themselves LulzSec, said they pulled off what they described as an elementary attack to highlight Sony's "disgraceful" security.

Sony said it was aware of Lulz Security's statement and was investigating.

In April, hackers broke into Sony's PlayStation Network and stole data from more than 77 million accounts.

That attack was considered the biggest in internet history and led to Sony shutting down the PlayStation Network and other services for almost a month.

compiled from agency reports