If you ssh into a host and use ssh-agent + `ForwardAgent Yes` - host can get your PRIVATE key.
They can't get your private key - But they can make use of it so long as you're connected. Definitely only enable `ForwardAgent` for hosts that you trust.
Code is open source! I don't look at your public keys or private keys. I hash IPs so we have IDs that can't be tracked back to the IP.
Instead of (just) downvoting him, why not correct him? Look at his age!