Confused ... a little.
Surely the only way to "steal" BitCoins is to insert a record in the blockchain which effectively transfers from an account which *has* BTC into another account ?
So is the case here, that the exchange was holding the necessary crypto keys which were accessed by the hackers ?
Is there not a mechanism to reverse the transactions ? Is it not possible to lock the receiving accounts.
Was any of this thought about when BTC was devised ?
Are other virtual currencies at risk ?
The more I read about BTC, the more I am convinced it really was one guy alone. There's too many holes for a committee to have come up with it.