Sony said Thursday hackers have accessed the email addresses and names of as many as 400 of its mobile unit's customers in China and Taiwan held on servers owned by a third-party vendor. The company said no credit card or banking information was compromised, although hacking group NullCrew claimed in tweets to have perpetrated.

Sony added that the "hacked" servers were not owned by the company, but they were run by a third-party service provider based in China.

"We became aware of the incident late last night or early this morning," said company spokesman Hiroshi Okubo said.

The message posted on Pastebin on Sept. 3 claims to have hacked Sony Mobile and lists hundreds of what appear to be login IDs and email addresses from the company's site.

"Sony, we are dearly dissapointed in your security. This is just one of eight sony servers that we hve control of," it reads.

Sony was the target of several large-scale attacks last year.

In October, the company suspended 93,000 user accounts on several of its gaming networks after a large number of unauthorized login attempts on those accounts.

In April, Sony was again a victim of a massive attack on its online properties, in which 100 million accounts were stole from company databases.