by William (Bill) Gleason
For years, quantum computing has been treated as a distant concern, something to address after it becomes commercially viable. That mindset is no longer safe.
Adversaries are already preparing for a post-quantum world.
The most serious threat organizations face today is “harvest now, decrypt later.” Attackers are stealing encrypted data now, fully aware that once quantum-capable systems mature, today’s encryption will be trivial to break. Sensitive data with long shelf lives, intellectual property, customer records, national infrastructure data, healthcare information, will be exposed retroactively.
This means the window to act is before quantum computing becomes mainstream, not after.
The First Step: Conduct a Full Cryptographic Inventory
Every organization must begin with a complete cryptographic inventory. You cannot protect what you do not understand.
A proper cryptographic inventory answers critical questions:
Most organizations discover often uncomfortably that cryptography is embedded everywhere, undocumented, inconsistently managed, and rarely governed as a first-class security control.
Without this visibility, post-quantum migration is impossible.
Quantum Readiness Requires Governance, Not Guesswork
Preparing for quantum threats is not about ripping and replacing everything overnight. It is about the following:
This is a strategic initiative, not a science experiment.
SigmaSRC, Inc. Has the Quantum Cryptography Inventory Playbook
At SigmaSRC, we have developed a practical, enterprise-ready Quantum Security Playbook that walks organizations through:
The SigmaSRC Quantum Cryptography Inventory Playbook is available to download for free.
No hype. No vendor lock-in. Just a clear, actionable framework to help organizations start now before it is too late.
Quantum computing will not wait for organizations to catch up. The time to prepare is now!