What if the information we're protecting today becomes readable tomorrow?
Not because someone stole a password or bypassed a firewall, but because the mathematics protecting that information is no longer enough.
Welcome to Post-Quantum Cryptography (PQC).
For decades, technologies like RSA and elliptic-curve cryptography have helped secure communications, authenticate systems, and establish digital trust. A sufficiently powerful quantum computer could undermine those protections.
Here's what concerns me as an IT leader:
Our adversaries don't have to decrypt everything today. They can collect encrypted information and wait.
It's called "Harvest Now, Decrypt Later."
Information protected today may still be sensitive ten or twenty years from now. Think student records, healthcare information, financial data, intellectual property, and government communications.
This isn't just science fiction.
In 2024, NIST finalized its first post-quantum cryptography standards. Its transition planning points toward phasing out quantum-vulnerable algorithms, with 2030 and 2035 as important milestones.
AI is changing cybersecurity too, but it's a separate challenge. We shouldn't confuse today's AI capabilities with a future quantum computer's ability to attack certain cryptographic algorithms.
So what should IT leaders do now?
Start with visibility. Where do we depend on vulnerable cryptography? Which vendors have migration roadmaps? How long must our information remain confidential?
Think certificates, VPNs, authentication, applications, and procurement.
Cryptographic migration isn't another Patch Tuesday. It's a multiyear effort involving compatibility, budgets, vendors, policies, and operational risk.
Nobody knows when a cryptographically relevant quantum computer will arrive. Panic isn't a strategy, but neither is waiting.
2030 shouldn't be the year we start asking questions. It should be a milestone for measuring our readiness.
Cybersecurity leadership means preparing for changes to the foundations we trust, not just responding to threats we can already see.
Will we be ready when today's protections are no longer enough?