Quantum Readiness Day: How to Prepare for Post-Quantum Security
KnowBe4, Tuesday, September 22nd, 2026
A CISO advisor argues Quantum Readiness Day should push organizations to treat post-quantum migration as an ongoing governance program.
Marking Quantum Readiness Day on September 24, this KnowBe4 post argues that quantum risk preparation is a governance and engineering program rather than a single technology upgrade.
It says organizations need to identify what data must stay confidential long-term, map where cryptography is embedded across their systems, engage vendors early, and build the ability to migrate cryptographic algorithms without a painful redesign.
The piece highlights the 'harvest now, decrypt later' risk, where attackers steal encrypted data today to decrypt once quantum computers become capable, meaning the effective start date for quantum risk has already passed.