According to Bybit's holdings, that amounts to $1.5 billion in cryptocurrency that was stolen from Bybit and its customers, making this the largest ever cryptocurrency theft. However, as Molly White of Web3IsGoingGreat points out, the hacker can't exactly cash out $1.5 billion in Ethereum, because an amount that high would crash the value of ETH.

Researchers spot the stolen funds moving through cryptocurrency wallets that were used in earlier heists attributed to North Korea's Lazarus hacking group.

Bybit is a well-known cryptocurrency exchange with more than 60 million users. It’s regularly ranked among the top five cryptocurrency exchanges online by volume. The hack was disclosed on Feb. 21. The company said an attacker gained control of an Ethereum wallet and transferred the holdings in the wallet to an unknown address.