• At approximately 05:00 UTC on March 24, out of an “abundance of caution” we replaced our RSA SSH host key used to secure Git operations for GitHub.com
• The exposure was the result of what we believe to be an inadvertent publishing of private information
• We have no reason to believe that the private key was abused (yet!)

Internet archive link here also - https://web.archive.org/web/20230324071940/https://github.blog/2023-03-23-we-updated-our-rsa-ssh-host-key/