CyphrQPost-Quantum TLS Is Already Here: How to Check Your Own Systems
Hybrid X25519MLKEM768 key exchange is on by default in major browsers and libraries. See where it runs, where it's missing, and how to test your servers.
Quantum
The quantum threat to encryption, and what quantum computers can really do.
What Is Q-Day? A Calm Guide to Post-Quantum Readiness
Q-Day is when a quantum computer could break today's encryption. What it is, what NIST has standardised, and a practical checklist for you.
Logical Qubits Explained: What Willow's Error Correction Proved
What a logical qubit is, why error correction matters, and what Google's Willow and other published milestones do and don't say about quantum risk.
How Many Qubits to Break RSA-2048? Gidney's 2025 Estimate
Gidney's 2025 paper estimates under 1 million noisy qubits and under a week to factor RSA-2048, down from 20 million. What it assumes and what to do.