North Korean cybercriminals were responsible for almost a third of all cryptocurrency losses worldwide in 2023, stealing at least $600 million worth of virtual assets, according to a U.S. blockchain analytics firm.

Pyongyang’s cryptocurrency heists were on average 10 times as damaging as virtual currency thefts committed by non-North Korean threat groups, TRM Labs said in a report Friday. 

Among the major heists attributed to North Korean cybercriminals was a theft of some $100 million from virtual wallet service Atomic Wallet and a combined $100 million from payment platforms AlphaPo and CoinsPaid.

The annual haul represents