Assets were stolen from Dubai-based cryptocurrency exchange Bybit earlier this month, in what's believed to be the largest-ever digital heist.

North Korean hackers behind the $1.4 billion Bybit hack control more than 11,000 cryptocurrency wallets used to launder stolen funds, according to blockchain analytics firm Elliptic. On Feb. 25, four days after the Bybit exploit,

The FBI referred to the attack as “TraderTraitor,” a malicious campaign linked to North Korean state-sponsored hackers the Lazarus Group.

As news started spreading about a massive hack on crypto exchange Bybit last Friday, cybersecurity researchers quickly concluded that the era of giant digital-asset heists had entered a new and potentially ruinous phase.

Bybit clients withdrew almost $4 billion within two days of the attack; the company recovered just 3% of the total of the stolen crypto assets