#SecureYourAssets It turned out that for such a large-scale robbery, the criminals did not hack the system, but rather exploited the human factor. First, the criminals gained access to the data of the signers of Bybit's cold wallet, where the exchange stored its clients' funds. Then, the hackers cloned the transaction signing interface. When the responsible parties checked the transfer, they saw the correct destination address and amount, without any suspicious signs, but the logic of the smart contract itself had been altered. By carrying out what seemed to be a routine operation, the exchange employees were actually handing control of the wallet over to the criminals. After that, they withdrew all the available funds from the wallet, so when you make a transaction, pay close attention to security to avoid ending up with nothing.