The FBI has officially linked the $1.4 billion cryptocurrency heist at Bybit to North Korean state-sponsored hackers after security researchers reached the same conclusion. The agency alleges that the infamous North Korean hacking group Lazarus is behind the hack.

The Federal Bureau of Investigation said on Wednesday that North Korea was responsible for the theft of approximately $1.5 billion in virtual assets from cryptocurrency exchange ByBit. The agency said it refers to this specific North Korean malicious cyber activity as "TraderTraitor.

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