blog.cloudflare.com· Sep 10, 2026· by Sebastiaan Neuteboom

1.1.1.1 now supports post-quantum DNSSEC, all 2,420 bytes of it

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1.1.1.1 now validates DNSSEC signatures using NIST’s post-quantum ML-DSA-44 algorithm. Here is how we manage 2,420-byte signatures and downgrade risks at scale.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#1.1.1.1#Cryptography#DNS#DNSSEC#Post-Quantum#Research#Security