Post-Quantum Readiness
Are You Ready for Post-Quantum Cryptography? The 2026 Readiness Gap — and the 3-Minute First Step
69% see the quantum risk, only ~5% have acted. Learn why teams stall, what Mosca's theorem means for your data, and the 3-minute first step.
Are You Ready for Post-Quantum Cryptography? The 2026 Readiness Gap — and the 3-Minute First Step
Most security leaders now know that quantum computing will eventually break the encryption protecting their data. Far fewer have done anything about it. In a 2025 DigiCert study, roughly 69% of enterprises recognized the quantum risk — yet only about 5% had quantum-safe encryption in place. That gap between awareness and action is the single most important thing to understand about post-quantum cryptography (PQC) in 2026, and closing it is easier to start than most people assume.
The awareness-vs-action gap is real — and wide
The numbers tell a consistent story across multiple 2025 surveys. ISACA found that only about 5% of organizations have a defined quantum strategy, and roughly 95% lack a roadmap for migrating to post-quantum cryptography. Other 2025 research reinforces the picture: around 81% of respondents said their cryptographic libraries and HSMs aren't prepared, and about 91% have no formal migration roadmap.
So the recognition is there. The problem isn't that leaders don't believe quantum is a threat — it's that they don't know where to begin. And there's a specific, fixable reason for that paralysis.
Why most teams stall: they don't know where cryptography lives
Cryptography isn't a single product you can point to. It's woven invisibly through your entire estate — TLS certificates on public and internal services, the RSA and ECC public keys behind them, VPN tunnels, code-signing pipelines, embedded firmware, databases, and the libraries inside applications nobody has touched in years.
You can't migrate what you can't see. Before any team can choose new algorithms or set a timeline, it has to answer a deceptively hard question: where does cryptography actually live in our organization, and what algorithms are we using? This is exactly the visibility gap that stalls most PQC programs, and it's why the recommended first move is never "rip and replace." It's to build a cryptographic inventory — a catalog of the cryptographic assets you depend on. Without that foundation, a roadmap is just guesswork.
The clock has already started for long-lived data
Here's the part that makes inaction risky even though no quantum computer can break RSA today.
Adversaries don't have to wait. Under a strategy known as "harvest now, decrypt later" (HNDL), they collect encrypted long-lived data today and store it, intending to decrypt it once a cryptographically relevant quantum computer (CRQC) exists. This isn't a fringe theory — DHS, the UK's NCSC, ENISA, and Australia's ACSC all base their guidance on this premise. If your data needs to stay confidential for years (think health records, financial data, government secrets, intellectual property), it is arguably already exposed.
The cleanest way to reason about your own exposure is Mosca's theorem. It states that if your migration time (X) plus your data security shelf-life (Y) is greater than the time until a CRQC arrives (Z) — that is, if X + Y > Z — then your data is already at risk.
Plug in realistic numbers. The Global Risk Institute's 2025 quantum threat timeline (led by Michele Mosca) puts the median expert estimate for a CRQC at roughly 2029–2032, with about a 34% probability by 2030. If migration across a large estate takes years (X), and your data must stay secret for a decade (Y), the sum easily exceeds the time until Z. The clock started the day your data was created.
To be clear and honest about the threat: it is not yet here. Google's Willow chip (2025) demonstrated below-threshold error correction — a genuine scientific milestone — but logical error rates remain far from what's needed to break RSA or ECC. Willow was a real step forward, not a break in the cryptography you use today. The correct posture is "not yet, but prepare now," precisely because preparation takes longer than most organizations expect.
See where your organization stands — run a free CipherReady readiness scan and get a cryptographic inventory of your public TLS, certificates, and algorithms in about 3 minutes.
You may already be required to inventory your cryptography
For many organizations, this isn't optional. Several 2025 mandates now expect a cryptographic inventory or crypto-agility:
| Mandate | Effective | What it expects | |---|---|---| | PCI DSS 4.0 (Req. 12.3.3) | Future-dated controls in effect Mar 31, 2025 | A documented cryptographic inventory and a migration plan for deprecated algorithms | | DORA | Jan 17, 2025 | Financial entities to manage ICT risk, including crypto-agility and PQC | | NIS2 | In force | "State-of-the-art" encryption in transit and at rest, and readiness to upgrade |
And for anyone touching U.S. National Security Systems, the NSA's CNSA 2.0 sets firm deadlines: web servers and cloud services should prefer post-quantum algorithms by 2025 and use them exclusively by 2033, while networking equipment like VPNs and routers should prefer them by 2026 and exclusively by 2030. From January 1, 2027, new NSS acquisitions must support CNSA 2.0.
In other words, the cryptographic inventory you'd build for quantum readiness is often the same artifact a regulator is already asking for.
What you're actually migrating toward
The destination is no longer ambiguous. On August 13, 2024, NIST finalized the first post-quantum standards:
- FIPS 203 (ML-KEM, formerly Kyber) — key encapsulation / encryption
- FIPS 204 (ML-DSA, formerly Dilithium) — digital signatures
- FIPS 205 (SLH-DSA, formerly SPHINCS+) — hash-based signatures
A fourth standard, FIPS 206 (FN-DSA, formerly Falcon), is still in progress in 2026, and HQC was selected in March 2025 as a backup key-encapsulation mechanism, with finalization ongoing.
These aren't theoretical. Post-quantum TLS is already shipping: Chrome 131 (Nov 2024), Firefox 135 (Feb 2025), OpenSSL 3.5.0 (Apr 2025), and Apple OS v26 all support the hybrid X25519MLKEM768 key exchange. Cloudflare measured roughly 38% of human HTTPS traffic using hybrid post-quantum TLS by March 2025. The migration is underway around you — the question is whether your estate is part of it.
You don't need to boil the ocean — you need step one
The reason the readiness gap feels overwhelming is that people imagine PQC as a single, enterprise-wide replacement project. It isn't. Migration is a journey, and every journey has a first step that makes the rest possible.
That first step is visibility. Before you scope a roadmap, brief your board, or budget a migration, you need a quantum risk assessment grounded in your real cryptographic exposure — not a generic threat briefing. From there, a structured PQC readiness checklist turns the inventory into prioritized action.
The good news: you can get the externally visible portion of that inventory for free, right now, in about three minutes — no agents to install, no credentials to hand over.
How CipherReady gives you that first step
CipherReady runs a safe, external, metadata-only readiness scan of domains you own or are authorized to assess. It inventories your public TLS certificates, TLS versions, DNS exposure, public-key algorithms (RSA and ECC), and HTTP security headers, then produces a CipherReady Readiness Score, an executive PDF report, AI-assisted summaries, and scheduled monitoring so you can track progress over time.
It is deliberately not a vulnerability scanner or a penetration test. There's no exploitation, no credentials, no intrusive testing — just the visibility you need to stop guessing and start planning. Think of it as the foundation, not the finish line: the inventory is step one, and migration is the journey it enables.
Frequently Asked Questions
Do I need to panic about quantum computers breaking encryption right now?
No. A cryptographically relevant quantum computer doesn't exist yet, and Google's 2025 Willow milestone, while real, is still far from breaking RSA or ECC. The urgency is about long-lived data and "harvest now, decrypt later," plus the fact that migration takes years. The honest framing is "not yet, but prepare now."
What is a cryptographic inventory, and why is it the first step?
It's a catalog of where cryptography lives in your environment — the certificates, algorithms, and protocols you depend on. You can't migrate what you can't see, so an inventory is the foundation for any roadmap. Several mandates, including PCI DSS 4.0 Requirement 12.3.3, already require a documented cryptographic inventory.
How long does a CipherReady scan take, and what does it check?
About three minutes for the externally visible portion of your estate. It inventories public TLS certificates, TLS versions, DNS exposure, RSA/ECC public-key algorithms, and HTTP security headers, then returns a Readiness Score and an executive PDF — all metadata-only, with no credentials or intrusive testing.
Which algorithms should we be migrating toward?
The finalized NIST standards from August 2024: FIPS 203 (ML-KEM) for key encapsulation, FIPS 204 (ML-DSA) for signatures, and FIPS 205 (SLH-DSA) for hash-based signatures. FIPS 206 (FN-DSA) is still in progress in 2026. Hybrid post-quantum TLS using X25519MLKEM768 is already live in major browsers and OpenSSL 3.5.0.
Start with visibility — your free first step
The readiness gap isn't a knowledge problem anymore; it's a starting-line problem. Roughly 69% of organizations see the risk, only about 5% have acted, and 95% have no roadmap — almost always because they don't yet know where their cryptography lives. You can change that today.
Run a free CipherReady readiness scan and get a cryptographic inventory of your public TLS, certificates, and algorithms in about three minutes. The free plan includes three scans a month, so you can baseline now and track your progress — and when you're ready to scale across more domains, monitoring, and teams, see CipherReady pricing to find the right plan. Don't boil the ocean. Take step one.