North Korean hackers are switching to new money laundering techniques and increasingly using cross-chain bridges, Chainalysis said in a report published Thursday.

The Lazarus Group, notorious for its hacks of crypto companies and protocols including Harmony, Coincheck, Atomic Wallet and many others, remains one of the most prolific attackers in crypto. While the group used to be an active user of the Tornado Cash mixing protocol and the Sinbad mixer, it's now switched to a a new mixer called YoMix, Chainalysis found.

Over the course of 2023, inflows of funds to YoMix grew five times, Chainalysis said, adding that about one third came from wallets associated with crypto hacks. 

“The growth of YoMix and its embrace by Lazarus Group is a prime example of sophisticated actors’ ability …