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 ...
InfoQ

GitHub Adds Post-Quantum Secure SSH Key Exchange to Protect Git Data in Transit

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ZDNet

GitHub shifts away from passwords with security key support for SSH Git operations

GitHub has announced support for security keys to prevent account compromise in SSH Git operations. When you add a security key to SSH operations, you can use these devices to protect you and your ...