https://github.blog/2023-01-30-action-needed-for-github-desktop-and-atom-users/
On December 7, 2022, GitHub detected unauthorized access to a set of repositories used in the planning and development of GitHub Desktop and Atom. After a thorough investigation, we have concluded there was no risk to GitHub.com services as a result of this unauthorized access and no unauthorized changes were made to these projects.
A set of encrypted code signing certificates were exfiltrated; however, the certificates were password-protected and we have no evidence of malicious use. As a preventative measure, we will revoke the exposed certificates used for the GitHub Desktop and Atom applications. Revoking these certificates will invalidate some versions of GitHub Desktop for Mac and Atom..
