North Korea has pulled off a $1.5 billion crypto heist, the biggest in history.The theft occurred at the Dubai-based exchange Bybit, where over 400,000 ethereum and staked ethereum coins were stolen.The funds were transferred from a 'Multisig Cold Wallet' to one of the exchange's hot wallets and then moved into wallets controlled by the attackers.The techniques and laundering of the stolen funds suggest the involvement of threat actors working for North Korea.