Q-Day has begun. Are you ready?
IBM warns that "Q-Day" has already begun, meaning current encryption methods are increasingly vulnerable to future quantum computers. The article urges organizations to begin transitioning to post-quantum cryptography now to protect data against future decryption threats.
Background
Q‑Day is the hypothetical moment when a sufficiently powerful quantum computer breaks the public‑key cryptography (RSA, ECC) that secures the internet — HTTPS, VPNs, email, digital signatures, and much of modern infrastructure.
- IBM has warned that "Q‑Day has already begun" not because a break has happened, but because attackers are harvesting encrypted data now ("store now, decrypt later"), stockpiling it for future quantum decryption.
- The US National Institute of Standards and Technology (NIST) has finalized new post‑quantum cryptography (PQC) standards, and IBM has contributed algorithms (CRYSTALS‑Kyber, CRYSTALS‑Dilithium) to those standards.
- Organizations are urged to begin "crypto‑agility" — inventorying their cryptographic assets and migrating to PQC before quantum computers mature, a process expected to take a decade or more.
- The piece is part of IBM’s broader campaign to position itself as the leading vendor of quantum‑safe solutions and consulting services.