Hacktivist group NullCrew has dumped 400 stolen private Sony customer emails on the web.
The emails belong to Sony mobile customers from mainland China and Taiwan. For Sony, the attack adds to a growing number of breaches for the troubled electronics giant.
"Sony, we are dearly disappointed in your security. This is just one of eight Sony servers that we have control of," NullCrew wrote on a post on info dumping site Pastebin.
NullCrew, which is said to have connections to the hacktivist group Anonymous refused to confirm their motives for the attack, but hinted that, "maybe, just maybe, it's the fact that not even your customers can trust you. Or maybe, just maybe, the fact that you can not do anything correct technologically."
The breach marked the second major hack for Sony in as many years.
Last year the company saw a huge data breach from a hack on Sony's PlayStation Network. Sony acknowledged that the attack could have affected as many as 70 million users who may have had their name, address, and email id stolen.
Sony has had more than just security problems in recent years. Last month the firm layed off 1,000 employees as part of a restructure of its mobile division.
The move book ended a recent Sony buyout of former mobile partner Ericsson last February. Sony performed the buyout to head the company's mobile brand in a new direction.
Hacktivists also made waves earlier this month when a group took credit for hacking an FBI laptop with the personal information of 12 million iPhone users.
The FBI has since come out and denied any such attack. It has since been thought that the hacking group took the information from an iOS developers server and re-attributed it to the FBI.
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