Bitcoin exchange CEO blames theft through hacking for losses
Print Edition
The Tokyo bitcoin exchange that filed for bankruptcy protection blamed theft through hacking for its losses yesterday, and said it was looking into a criminal complaint.
In a statement posted on the Mt Gox exchange’s website, CEO Mark Karpeles outlined the events that resulted in the company’s insolvency and said there was a “high probability” theft behind the disappearance of bitcoins.
“We will make all efforts to ensure that crimes are punished and damages recovered,” Karpeles said.
He said Mt Gox will try to resume business as a way of increasing repayments to its creditors.
The online exchange was unplugged early last week as rumors of its insolvency swirled, adding to doubts about the viability of bitcoins overall. Its woes are a setback for bitcoin, a virtual currency that has grown in popularity since its 2009 creation as a way to make transactions across borders without third parties such as banks.
Bitcoin has also become a highly speculative form of investing. But it comes with risks, as the Mt Gox debacle has illustrated, partly because bitcoins are not regulated by central banks or other financial authorities.
The statement said illegal access to Mt Gox in early February abused a bug in its computer system.
It also said “large discrepancies” were found between the amount of cash held in financial institutions and the amount deposited by users, meaning that about 2.8 billion yen (US$28 million) was unaccounted for.
Karpeles said on Friday that 750,000 bitcoins deposited by users and another 100,000 belonging to the company disappeared. That would amount to about US$425 million at recent prices.
He repeated the bitcoin numbers in yesterday’s statement but said also the complete extent is not yet known.
A huge number of transactions must be investigated for a variety of problems to establish the truth, Karpeles said.
Mt Gox set up a call center at a Tokyo telephone number, open during business hours Monday through Friday, to answer any queries.
Karpeles promised to cooperate with the authorities in Japan and overseas in ongoing investigations, and said an expert had been asked to probe a possible criminal complaint.
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