Hackers Claim Mt. Gox Sat on 'Stolen' Bitcoin

Stolen file reportedly reveals 951K-bitcoin balance
By Matt Cantor,  Newser User
Posted Mar 10, 2014 9:59 AM CDT
In this Feb. 28, 2014 file photo, Mt. Gox CEO Mark Karpeles speaks at the Justice Ministry in Tokyo.   (AP Photo/Kyodo News, File)

(Newser) – Hackers say the now-bankrupt Bitcoin exchange Mt. Gox has been less than honest about money lost in a major security lapse. Yesterday, they hacked into CEO Mark Karpeles' blog and Reddit account, announcing that the company had kept currency it claimed was stolen, Forbes reports. They said they'd hacked Mt. Gox's servers, and posted a file full of data suggesting the exchange had a balance of 951,116 bitcoins. Hackers say that points to fraud after the company claimed it lost 750,000 of users' bitcoins.

The authenticity of the document isn't entirely clear, though some Reddit posters noted that personal account information revealed in the file appeared accurate, CNET notes. Still, it's possible that the balance shows money that was already lost in the security breach, reflecting bad accounting rather than theft, the Verge reports. Meanwhile, a bitcoin forum user said he or she was trying to sell 20 gigabytes of stolen information from Mt. Gox—a database that holds user details, including passport scans. "Selling it one or two times to make up personal loses (sic) from gox closure," the user said. The price: 100 bitcoins, or some $63,000, Forbes notes. (Read more hackers stories.)

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