A hacker group has claimed it engineered yet another attack on Sony Corp computer networks.

The group, which calls itself Lulz Security, said on Thursday that it broke into servers that run the SonyPictures.com website, and then compromised the personal information of more than 1 million Sony customers.

Lulz Security said in a statement posted on its website that it hacked into a database that included unencrypted passwords as well as names, address and birth dates of Sony's customers.

This is the latest in a series of security headaches for Sony, which discovered in April that hackers had broken into its PlayStation Network and stole data from more than 77 million accounts.

The PlayStation attack, considered the biggest in Internet history, prompted the Japanese electronics giant to shut down its PlayStation Network and other services for close to a month.

Sony was not immediately available for comment on Thursday.

(Reporting by Liana B. Baker and Jim Finkle; Editing by Steve Orlofsky)

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