Technology
Bitcoin's value has dropped sharply after one of the largest trading exchanges said there was a flaw in the virtual currency's underlying software. MtGox said it had halted transfers to external Bitcoin addresses on Friday after detecting "unusual activity". It said an investigation had revealed it was possible for thieves to fool the transaction process so that double the correct amount of bitcoins would be sent.
Background:
Bitcoin plunges after marketplace indefinitely halts withdrawals [Reuters]
Miami Bitcoin arrests may be first state prosecution [Bloomberg]
