Former President Donald Trump’s new social network appears to have lifted code without attribution to Mastodon, and the open-source social network software company may be gearing up to sue.

Mastodon founder Eugen Rochko said screenshots of the TRUTH social app’s open-source code, shared after a series of trolls and hackers gained access to the platform before its November 2021 release date, revealed an apparent violation of the company’s requirement that customers share the code and copies of the general product license to users. Rochko indicated Mastodon may sue over the alleged breach.