A US financial regulator warned consumers Tuesday that using the online currency Bitcoin is fraught with risks including theft by hacking and fraud.
The collapse of Japan's Mt. Gox bitcoin exchange is spilling into U.S. bankruptcy court as the company scrambles for legal cover after losing digital currency valued at $473 million.
Bitcoin exchange MtGox faced massive hacker offensives last month, coming under some 150,000 DDoS attacks per second for several days ahead of its spectacular failure, a report said Sunday.
Whether you see Bitcoin as the future of finance or a reckless gamble, the digital currency has become headline news over the past year, even as its origins remain shrouded in mystery.
Dorian Prentice Satoshi Nakamoto denied Thursday that he is the creator of bitcoin.
Bitcoin is not a currency but transactions involving it should be "subject to taxation", Japan's government said Friday, in a move that could pave the way for formal regulations on the troubled virtual unit.
Big bitcoin backers the Winklevoss brothers said Wednesday they had used the virtual currency to buy tickets into space on Richard Branson's Virgin Galactic aircraft.
Japan is looking at ways to tax Bitcoin transactions, a report said Tuesday, in the wake of the spectacular failure of the Tokyo-based MtGox exchange after a half-billion-dollar theft.
The Oracle of Omaha is not a believer in bitcoin.
The Tokyo bitcoin exchange that filed for bankruptcy protection blamed theft through hacking for its losses Monday, and said it was looking into a criminal complaint.