Quantum Security Guides
Evergreen reference on quantum computing and quantum security, organized by pillar. Start with a topic hub, then work through the supporting guides.
Q-Day. Post-quantum migration. Wallet security. We explain the real risks to cryptocurrency from quantum computing — and what you can do about them — without the noise.
Quantum computing is moving from theory to engineering. For cryptocurrency, that raises concrete questions: Will quantum computers break Bitcoin? What is post-quantum cryptography? How does quantum key distribution work? And when should you act?
Our guides break this into distinct hubs — Q-Day and quantum-threat mechanics, Post-Quantum Cryptography (PQC), and Quantum Key Distribution (QKD) — with clear explanations, checklists, and step-by-step actions. Whether you are securing a wallet, migrating a protocol, or just trying to understand the timeline, start with the question that matters most to you.
// FAQ
What is quantum safety for cryptocurrency?
Quantum safety covers the risks quantum computing poses to crypto and the defenses against them, from post-quantum cryptography and Q-Day timelines to wallet and exchange security. qnews.io organizes this into three hubs: Q-Day, post-quantum cryptography, and quantum key distribution.
How do I know if my crypto is safe from quantum computers?
No quantum computer can break crypto today, so the practical question is how exposed your holdings are over time. Start with How to Protect Your Crypto from Quantum Computers, which covers self-custody, exchanges, and the migration steps available now.
What is Q-Day and why does it matter for crypto?
Q-Day is the estimated point when a quantum computer becomes powerful enough to break today’s public-key cryptography. For crypto, that affects wallet signatures and the security around exchanges, though no such machine exists yet. The Q-Day hub compares the timeline estimates.
What is post-quantum cryptography (PQC)?
PQC is the family of algorithms designed to resist quantum attacks, including the NIST standards ML-KEM, ML-DSA, and SLH-DSA. The post-quantum cryptography hub explains how they work and what they mean for crypto.
Where can I learn about quantum key distribution (QKD)?
QKD uses quantum physics to exchange encryption keys in a way that reveals any interception attempt. The QKD hub covers how it works, where it is deployed, and how it relates to crypto security.