A new report has found that an apparent North Korean IT worker contributed code to a major blockchain ecosystem without anyone being aware of their background, raising concerns about the scope for Pyongyang to infiltrate the open-source technologies underlying cryptocurrency services.

In a blog post published on Monday, Interchain Labs, which leads development and growth for the Cosmos blockchain hub, reported that the unnamed DPRK-linked individual going by the username “cool-develope” contributed to multiple repositories on the software development-focused platform Github between summer 2022 and Nov. 2024.

Interchain’s security report, published in collaboration with the blockchain