01▲OpenSSH 10.4 Security Fixes + Experimental Post-Quantum Signatures (July 6, 2026) windowsforum.com OpenSSH 10.4 ships experimental ML-DSA 44 + Ed25519 signatures, plus the usual SSH bugfix pile.authenticationclient-serverhardeningpqcscpsecuritysftpsignaturessshtwitter2 pts/pavelk/1 day ago/discuss