Post-Quantum
Track on RadarPioneer in post-quantum cryptography, developing quantum-safe standards and solutions.
- Total raised
- $11.2M
- Employees
- 7
- Founded
- 2009
- Momentum
- 23
Stalling
Data updated August 2026
About
About Post-Quantum
At a glance
Post-Quantum is a cybersecurity company specializing in Data Protection, founded in 2009 and headquartered in London, United Kingdom. It has raised $11.2M in total funding, employs about 7 people, and is privately held.
Post-Quantum is a cryptography company founded in 2009 in London, UK, focused exclusively on post-quantum cryptography (PQC) — the development of cryptographic systems designed to remain secure against threats posed by quantum computers. The company conducts research and develops production-ready technologies based on code-based cryptography. Its most notable technical contribution is NTS-KEM, which was merged with work from Professor Daniel Bernstein to form Classic McEliece, a NIST Round 4 PQC finalist algorithm. Post-Quantum also authored RFC9370, ratified as the IETF global standard for hybrid quantum-safe VPN connectivity. Its solutions are deployed in operational environments, including the protection of NATO communications and securing drone communications in active conflict zones. The company targets governments, defense organizations, and critical infrastructure operators requiring long-term cryptographic resilience. Post-Quantum's approach centers on conservative cryptographic design, standards-based interoperability, and crypto-agility — building architectures that allow organizations to adapt as cryptographic standards evolve. The company holds ISO 27001 and ISO 9001 certifications and actively participates in NIST and IETF standardization processes. Its work spans cryptographic algorithm development, secure VPN connectivity, and quantum-safe communications infrastructure, serving organizations that need to protect sensitive information against both current and anticipated future quantum computing threats.
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Valuation
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FAQ
Frequently asked questions about Post-Quantum
When was Post-Quantum founded?▾
Post-Quantum was founded in 2009.
Where is Post-Quantum headquartered?▾
Post-Quantum is headquartered in London, United Kingdom.
How much funding has Post-Quantum raised?▾
Post-Quantum has raised a total of $11.2M in total funding.
Is Post-Quantum public or private?▾
Post-Quantum is a privately-held company.
How many employees does Post-Quantum have?▾
Post-Quantum has approximately 7 employees.