Sebastian Sinclair reports: Bitcoin marketplace KeepChange says it has managed to limit the ramifications of a security breach on Sunday. According to a�blog post�on Monday, the exchange said several�bitcoin withdrawal requests had been initiated from customer accounts to an address belonging to the attackers. However, i of the platforms verify subsystems halted the requests, resulting in no bitcoin being lost, the change said. The attackers did, though, deal to steal some customer data including email addresses, names, trade counts, total traded sum and hashed passwords. register more on CoinDesk.