More than 70m users of Sony’s online gaming network have had their names, e-mail addresses and passwords stolen by a hacker in one of the largest privacy breaches to date, the FT reports. Sony announced on Tuesday that the information had been taken – six days after it closed the PlayStation Network – as it began e-mailing users of the free service with warnings to be on the lookout for scams. The Japanese electronics and entertainment powerhouse said it was possible that credit card information had been taken as well, recommending that customers who had supplied those numbers online should review their bills carefully. The breach is troubling because many Sony gamers are likely to have used the same passwords for e-mail and social networking accounts. The hacker could resell user name and password combinations to other criminals, who could take control of those accounts and mine them for bank account passwords or send bogus e-mails to friends’ addresses.