Sony was told by the Japanese government to improve management of personal data after the electronics maker's networks were attacked by hackers who stole customer information, reports Bloomberg.
The government ordered Sony to carry out preventive measures against data breaches, the Ministry of Economy, Trade and Industry said in a statement.
Sony was also instructed to ease customer concerns over misuse of their credit cards and share more information among affiliates, according to the statement.
According to The Sydney Morning Herald, the hacker group declared in April that it would wage a cyber war against Sony for trying to stop people from tinkering with the PlayStation 3.
Three years earlier, the company faced three breaches in Europe, including one in which Sony said some PlayStation Network user data might have been stolen.
Meanwhile, the AFP says the firm, which has since suffered attacks on more Web sites worldwide including in Greece and Thailand, revealed the initial security breach on 26 April, after discovering it on 19 April.
Since then, Sony has hired outside security firms to put in place new safety measures.
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