What’s your QuantumQuantum?
The next discontinuity in computer security has many names. PostQ exists so you don’t have to pick one in advance.
Q is a variable.
We started by building for the original Q-Day: the day a cryptographically relevant quantum computer arrives and every RSA and ECDSA signature ever issued becomes forgeable in retrospect. That work is real, it’s ongoing, and it’s the foundation of the platform.
But the threat model that justifies post-quantum work — a discontinuity that retroactively breaks deployed cryptography — is the same threat model that justifies defending against AI-class exploit pipelines, supply-chain compromises, and the next zero-day-fueled CVE wave. Each one is a Q-Day in its own right.
So Q is a variable. We’ve seen prospects fill it in with all of these:
- [Quantum]
- [AI]
- [Q-Day]
- [Mythos]
- [Quotient]
- [Query]
PostQ helps you reach the post-Q world — whichever Q hits you first. Same scanners, same control plane, same single-pane dashboard. The variable is just the part you fill in for your stack.
Make cryptographic posture as observable as your application logs
We started by building for the quantum threat: nation-state adversaries are already harvesting encrypted data today on the assumption that they’ll be able to decrypt it once a cryptographically relevant quantum computer arrives. The urgency is real, NIST has finalized the standards, and the migration window is narrow.
But the same engineering teams now also have to defend against AI-class exploit pipelines that turn CVEs into working code in hours, supply-chain compromises that ship vulnerable crypto libraries straight into production, and a multiplying surface of agents and services that hold credentials they’ll outlive. The common thread: cryptography is invisible until it isn’t.
PostQ makes that surface visible. Continuous discovery of every key, cert, and signing identity. Hybrid migration paths that don’t require rewriting your apps. Policies that fail builds before regressions ship. Whatever the next Q-Day is, you’ll already know where you stand.
What drives us
Security-first engineering
Every design decision starts with the question: does this make our users more secure? We don't ship features that compromise cryptographic integrity.
Transparency and trust
Cryptography demands trust. We publish our algorithms, audit our code, and are transparent about what we know and what we don't.
Pragmatic migration
We don't believe in rip-and-replace. PostQ supports gradual, safe migration paths with hybrid cryptography, canary rollouts, and automatic fallback.
Developer empathy
Complex cryptography should have a simple interface. We care deeply about API design, documentation, and the developer experience.
Our story so far
PostQ founded with a focus on cryptographic posture and post-quantum migration
Launched Quantum Risk Scanner and Hybrid Signing API in private beta
NIST finalizes ML-DSA and ML-KEM standards — PostQ supports both at launch
General availability of the PostQ platform with full policy engine and observability
Build the future of cryptography
We’re a small, focused team of engineers and cryptographers building critical infrastructure for the next discontinuity — quantum, AI, and whatever comes after. If that excites you, we’d love to hear from you.