The collapse of Mt. Gox -- the trading forum for the virtual currency Bitcoin -- resulted in the loss of millions of dollars worth of Bitcoins after hackers broke into the system and stole mass amounts of the currency. The Mt. Gox CEO is now under fire as a suspect of the hack.
Background:
Mt. Gox CEO Holding 'Stolen' Bitcoins [PC Magazine]
Mt. Gox, Mark Karpeles Targeted In Alleged Bitcoin Hack [ReadWrite]
Hackers Hit Mt. Gox Exchange's CEO, Claim To Publish Evidence Of Fraud [Forbes]