GitHub ssh-rsa signature suspension starting November 4th: Troubleshooting steps for when SSH connections drop

The ssh-rsa signature method (a combination of RSA and SHA-1) and the diffie-hellman-group-exchange-sha256 key exchange ...
BleepingComputer

GitHub now supports security keys when using Git over SSH

GitHub has added support for securing SSH Git operations using FIDO2 security keys for added protection from account takeover attempts. Researchers at North Carolina State University (NCSU) found [PDF ...
TheServerSide

git@github: permission denied (PublicKey) SSH error fix

A practical walkthrough for replacing GitHub password authentication with a personal access token for repository operations. Compare Git stash, reset, and clean to revert tracked files, clear staged ...