#SecureYourAssets As it turned out, for such a large-scale robbery, the criminals did not hack the system but took advantage of the human factor. First, the criminals gained access to the data of the signers of the cold wallet Bybit, where the exchange stored its clients' funds. Then the hackers cloned the transaction signing interface. When the responsible persons checked the transfer, they saw the correct destination address and amount, without any suspicious signs, but the logic of the smart contract itself was changed. In what seemed to be a routine operation, the exchange employees were actually transferring control of the wallet to the criminals. After that, they withdrew all the available funds from the wallet, so when making a transaction, pay close attention to security to avoid being left with nothing.