Mark Karpeles, chief executive of Mt. Gox, attends a news conference at the Tokyo District Court in Tokyo February 28, 2014. Mt. Gox, once the world's biggest bitcoin exchange, filed for bankruptcy ... more 
Mark Karpeles, chief executive of Mt. Gox, attends a news conference at the Tokyo District Court in Tokyo February 28, 2014. Mt. Gox, once the world's biggest bitcoin exchange, filed for bankruptcy protection on Friday, saying it may have lost all of its investors' virtual coins due to hacking into its faulty computer system. Karpeles, bowing in contrition and wearing a suit instead of his customary T-shirt, apologised in Japanese at a news conference for the company's collapse, blaming "a weakness in our system." REUTERS/Yuya Shino (JAPAN - Tags: CRIME LAW BUSINESS HEADSHOT) less 
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Reuters | Photo By YUYA SHINO / REUTERS
Fri, Feb 28, 2014 6:05 AM EST