Person A finds out via brute force that the private key 0xFFFF FFFF FFFF 1111 contains 10BTC and tells person B the Bitcoin address and person D the private key
Person B crafts a Bitcoin transaction that sends the 10BTC to Person C and gives that transaction to person D.
Person D signs this transaction with the private key provided by person A and gives it to Person E.
Person E broadcasts this signed transaction to the Bitcoin network.
Who is the thief?
Was it person A, who simply discovered the weak private key?
Person B who crafted a Bitcoin transaction ?
Person C who unknowingly received the stolen funds?
Person D who signed a transaction he did not make with a private key A gave him?
Person E who simply relayed a Bitcoin transaction?
So legally and morally speaking, which person do you consider to be the thief? which of these acts is considered "theft" to you?
All of them.
It's one criminal group working together.
One might argue Person A is not a thief. Hacking itself may not be treated as thief, but stolen good(private key) is passed to third party.
Yeah I'd say the same. But A started the theft when he passed on the private key to D, if he was really brute forcing or whatever to find a vulnerability he shouldn't have given the key which contained 10 btc to D. Although, he himself didn't steal the coins but if he hadn't provided any keys to anyone, no theft would have occurred.
So morally they all did something which they shouldn't have and legally if they were found doing this all will be charged with stealing together as aiding and abetting a theft is also illegal.