A hacked device uncovered how North Korean developers secretly earned millions in crypto while working across different projects.

A large batch of leaked internal data has revealed that North Korean IT workers generated over $3.5 million in cryptocurrency in recent months through a coordinated operation involving fake developer identities and structured payment systems, according to blockchain investigator ZachXBT.

The information surfaced after an unnamed hacker compromised one of the workers’ devices, exposing records from an internal payment server tied to nearly 390 accounts, along with chat logs, browser data, and falsified identity documents used to secure…