CISO Tribune

Vendor comparison · 2 companies

PQShield vs QuSecure

PQShield is a cybersecurity company specialising in post-quantum cryptography. QuSecure is a post-quantum cryptography and crypto-agility company that gives an enterprise one place to set and enforce cryptographic policy across its infrastructure. CISO Tribune files both under Post-quantum cryptography and Encryption, tokenization and key management. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • PQShield
  • QuSecure
PQShield vs QuSecure: Products, Customers and Funding Compared
PQShieldPQShield is a cybersecurity company specialising in post-quantum cryptography.pqshield.comQuSecureQuSecure is a post-quantum cryptography and crypto-agility company that gives an enterprise one place to set and enforce cryptographic policy across its infrastructure.qusecure.com
What it sells
  • PQMicroLib-Core[1][10]A library designed with flexibility and configurability in mind.
  • PQCryptoLib-Core[1][10]A general-purpose cryptographic library for a wide variety of applications.
  • PQCryptoLib-SDK[1][10]A plug-and-play tool for moving OpenSSL-based applications to quantum resilience.
  • PQPlatform-CoPro[1][10]A cryptographic coprocessor that adds post-quantum capabilities to an existing security subsystem.
  • PQPlatform-TrustSys[1][5][10]A PQC-focused Root-of-Trust security solution.
  • PQPerform-Flare[10]A hardware-based PQC product designed for high throughput and low latency.
  • PQPerform-Inferno[1][10]A scalable hardware solution built on the PQPerform-Flare architecture.
  • PQPerform-Flex[10]PQPerform-Inferno combined with a RISC-V processor as a complete subsystem.
  • QuProtect R3[7][9][10]Platform for cryptographic command and control.
  • QuProtect[1][3][4][7][9][10][11][12][13]Post-quantum cybersecurity software for protecting encrypted communications and data.
  • QuEverywhere[13]Quantum-safe cryptography orchestration for websites and mobile applications.
Categories
Headquarters
United Kingdom[2][3]San Mateo, United States[2]
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately held[9]Privately held[2][13]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • September 22, 2026QuSecure announced it was named a Cool Vendor in a Gartner report on data security innovations, recognizing its post-quantum cryptography solution.[6]
  • February 11, 2026QuSecure appointed Brian Cunningham as Executive Vice President, Strategy and Growth, as enterprises and government agencies move to post-quantum cryptography.[15]
  • February 11, 2026QuSecure appointed Brian Cunningham, a former Special Operations Commander and Navy SEAL, as EVP Strategy & Growth.[5]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
Not written yetFrom its own pages, the company directs QuProtect at commercial and federal channel partners. The stated aim is to let those partners secure their networks, communication, and data. The site also carries industry pages for financial services, insurance, energy and grid, hospital systems, manufacturing, pharma and life sciences, and state and local government. This is our reading of the pages, and they state no organisation sizes or buyer roles.
Last verified
November 2, 2026September 27, 2026

Where they overlap

  • Post-quantum cryptography is the primary category of both PQShield and QuSecure; both are also filed under Encryption, tokenization and key management.
  • Both are privately held.

Where they differ, field by field

  • PQShield lists PQMicroLib-Core, PQCryptoLib-Core, PQCryptoLib-SDK, PQPlatform-CoPro, PQPlatform-TrustSys and 3 more. QuSecure lists QuProtect R3, QuProtect and QuEverywhere.
  • PQShield is headquartered in United Kingdom. QuSecure is headquartered in San Mateo, United States.

How they differ

CISO Tribune files both PQShield and QuSecure under Post-quantum cryptography as the primary category, with Encryption, tokenization and key management as a second category, and both companies are privately held. PQShield is headquartered in Oxford in the United Kingdom, with additional teams in the Netherlands and France, while QuSecure is headquartered in San Mateo, United States.

It also sells hardware products, among them PQPerform-Flare, PQPerform-Inferno, and PQPlatform-CoPro, a cryptographic coprocessor. PQShield aims its products at vendors building PQC into greenfield and brownfield products, and it says device manufacturers have chosen its PQC IP for hardware security solutions. PQShield has a reciprocal agreement with Kudelski Security and a Memorandum of Understanding with Tata Consultancy Services.

QuSecure sells software for managing and enforcing cryptography across an enterprise: QuProtect R3 covers cryptographic inventory, remediation to TLS 1.3 with ML-KEM, and automated certificate rotation. QuSecure also sells QuProtect, which protects data in transit in datacenters and in the cloud, and QuEverywhere, an orchestration product for websites and mobile applications. On September 22, 2026, QuSecure announced it was named a Cool Vendor in a Gartner report on data security innovations.

What it sells: PQShield

What PQMicroLib-Core does[1][10]
PQMicroLib-Core is a library designed with flexibility and configurability in mind. A CAVP-Ready version of PQCryptoLib-Core is tailored for embedded systems, small footprint solutions and memory constrained devices.
What PQCryptoLib-Core does[1][10]
PQCryptoLib-Core is a FIPS 140-3 CMVP Certified / CAVP Compliant general-purpose cryptographic library designed for a wide variety of applications. PQCryptoLib-Core is configurable by a secure API.
What PQCryptoLib-SDK does[1][10]
PQCryptoLib-SDK is a plug-and-play tool that helps to transition OpenSSL-based applications to quantum resilience. Software implementations of PQC algorithms are supplied via an OpenSSL provider, including ML-DSA, Falcon, ML-KEM and hybrid PQ/T schemes for TLS.
What PQPerform-Flare does[10]
PQPerform-Flare is a hardware-based FIPS 140-3 CAVP-certified product designed for high throughput and low latency PQC. PQPerform-Flare supports ML-DSA (FIPS 204) and ML-KEM (FIPS 203) and is optimized for TLS.
What PQPerform-Inferno does[1][10]
PQPerform-Inferno is a scalable hardware solution. Building on the architecture of PQPerform-Flare, Inferno integrates multiple instances with load balancing, and can deliver over 1 million key encapsulations per second.

What it sells: QuSecure

What QuProtect R3 does[7][9][10]
QuProtect R3 delivers continuous cryptographic inventory, remediation to TLS 1.3 with ML-KEM, automated certificate rotation, and compliance evidence. QuProtect R3 enables security teams to swap algorithms and push cryptographic policy changes across their entire network from one place. QuProtect R3 operates across cloud, on-premises, air-gapped, and sovereign environments and is backwards compatible with legacy infrastructure.
What QuProtect does[1][3][4][7][9][10][11][12][13]
QuProtect is a software-based PQC solution designed to protect encrypted communications and data using quantum secure channels. QuProtect is compatible with all algorithms selected by NIST. QuProtect provides authentication of users, devices, data, and services. QuProtect protects data in transit in datacenters and in the cloud.
What QuEverywhere does[13]
QuEverywhere is a quantum-safe cryptography orchestration product launched by QuSecure. QuEverywhere protects encrypted private data on any website or mobile application with quantum-resilient connections and sessions. QuSecure states that organizations can protect sensitive data wherever it travels without installing software at the endpoint.

Questions about PQShield and QuSecure

What do PQShield and QuSecure sell?
PQShield sells PQMicroLib-Core, PQCryptoLib-Core, PQCryptoLib-SDK, PQPlatform-CoPro, PQPlatform-TrustSys and 3 more. QuSecure sells QuProtect R3, QuProtect and QuEverywhere.
Are PQShield and QuSecure in the same category?
Yes. Post-quantum cryptography is the primary category of both on CISO Tribune.
Where are PQShield and QuSecure headquartered?
PQShield is headquartered in United Kingdom. QuSecure is headquartered in San Mateo, United States.
Who owns PQShield and QuSecure?
PQShield is privately held. QuSecure is privately held.
Who are PQShield and QuSecure sold to?
From its own pages, the company directs QuProtect at commercial and federal channel partners.
What have PQShield and QuSecure announced recently?
September 22, 2026: QuSecure announced it was named a Cool Vendor in a Gartner report on data security innovations, recognizing its post-quantum cryptography solution.

About PQShield

PQShield is a cybersecurity company specialising in post-quantum cryptography. PQShield develops and commercially deploys quantum-ready cryptographic solutions for hardware, software and communications. PQShield is headquartered in Oxford, with additional teams in the Netherlands and France.

PQShield states that quantum computers will soon be able to break current cryptography methods. PQShield aims its quantum-resistant hardware and software solutions at organizations, industries and nations. PQShield says the cryptography that keeps data, devices, connections and components secure must be modernized to align with the new NIST global standards. Public key cryptography, including RSA and elliptic curve cryptography (ECC), faces the greatest quantum risk. Post-quantum cryptography can be deployed on existing classical hardware today. Adversaries can harvest encrypted information now and decrypt it later when quantum capabilities mature.[4]

The PQShield team comprises post-quantum cryptographers, researchers and engineers. PQShield says its team has been actively involved in the international standardization of post-quantum algorithms. Customers are helped to evaluate existing infrastructure, determining the risk and agility of the underlying architecture. The PQShield team works alongside, or as part of, a customer's wider team to deploy end-to-end solutions. PQShield products are aimed at vendors building PQC into greenfield and brownfield products. Device manufacturers have chosen PQShield’s PQC IP for integration into hardware security solutions.[4][10]

PQShield has a reciprocal agreement with Kudelski Security, the cybersecurity division within the Kudelski Group. Under that agreement, PQShield will offer expert training and advisory services to clients of Kudelski, alongside post-quantum cryptography solutions for both software and hardware. The agreement includes a collaborative referral and co-marketing relationship to support Kudelski Security’s go-to-market strategy. PQShield has signed a Memorandum of Understanding with systems integrator Tata Consultancy Services to help its clients transition to post-quantum cryptography (PQC) solutions. PQShield has partnered with eShard, a provider of side-channel analysis and testing tools.[11]

PQShield offers post-quantum cryptography for embedded devices in as little as 5KB RAM. PQMicroLib-Core is a library designed with flexibility and configurability in mind. A CAVP-Ready version of PQCryptoLib-Core is tailored for embedded systems, small footprint solutions and memory constrained devices. PQCryptoLib-Core is a FIPS 140-3 CMVP Certified / CAVP Compliant general-purpose cryptographic library designed for a wide variety of applications. PQCryptoLib-Core is configurable by a secure API. PQCryptoLib-SDK is a plug-and-play tool that helps to transition OpenSSL-based applications to quantum resilience. Software implementations of PQC algorithms are supplied via an OpenSSL provider, including ML-DSA, Falcon, ML-KEM and hybrid PQ/T schemes for TLS.[1][4][10]

PQPlatform-CoPro is a cryptographic coprocessor designed to add post-quantum capabilities to an existing security subsystem. PQPerform-Flare is a hardware-based FIPS 140-3 CAVP-certified product designed for high throughput and low latency PQC. PQPerform-Flare supports ML-DSA (FIPS 204) and ML-KEM (FIPS 203) and is optimized for TLS. Building on the architecture of PQPerform-Flare, Inferno integrates multiple instances with load balancing, and can deliver over 1 million key encapsulations per second. PQPerform-Flex combines PQPerform-Inferno with a RISC-V processor to form a complete subsystem.[1][10]

PQShield products come in 4 security levels to address all use cases. The security levels are tested continuously by both PQShield and external labs for certification.[1][4][5][6][7][8][10]

PQShield on the record

Sources

PQShield full record

  1. [1]pqshield.comPQShield · pqshield.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Pqshield raises 37m in series b funding to deliver the widespread commercial adoption of quantum resistant cryptography 302175607PQShield via PR Newswire · prnewswire.com · published June 20, 2024 · Tier A
  3. [3]PQShield and Kudelski Security Partner to Address Quantum Threat | PQShieldPQShield · published September 29, 2021 · Tier A
  4. [4]Post-quantum Cryptography Experts | Quantum-safe & Quantum-resistant SolutionsPQShield · undated page, accessed October 27, 2026 · Tier A
  5. [5]Post-Quantum Cryptography Solutions | PQShieldPQShield · published April 24, 2025 · Tier A
  6. [6]We are attending, WEF - Annual Meetings of the Global Future Councils and Cybersecurity, 14 Oct | PQShieldPQShield · published October 14, 2025 · Tier A
  7. [7]We are speaking: Security Privacy Identity & Trust (SPIT) SIG event, Cambridge, 28 January 2025 | PQShieldPQShield · published January 28, 2025 · Tier A
  8. [8]We are judging at - Cyber Security Awareness Week Europe, 7-8 November 2024 | PQShieldPQShield · published November 7, 2024 · Tier A
  9. [9]Quantum Security Company: What to Look For | PQShieldPQShield · undated page, accessed November 10, 2026 · Tier A
  10. [10]Quantum-safe & Quantum-resistant Software, Hardware & UpgradesPQShield · undated page, accessed November 10, 2026 · Tier A
  11. [11]PQShield partners with Tata Consultancy Services and eShard to meet commercial demand for protecting organisations against quantum the threat | PQShieldPQShield · undated page, accessed November 10, 2026 · Tier A

QuSecure full record

  1. [1]qusecure.comQuSecure · qusecure.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Accenture invests in qusecure to protect against future quantum threats with crypto agilityAccenture · newsroom.accenture.com · published January 22, 2025 · Tier B
  3. [3]MSSP Alert: Arrow Electronics, QuSecure Partner for Post-Quantum CybersecurityMSSP Alert · published January 26, 2023 · Tier A
  4. [4]Crypto-Agility for Critical Systems | QuSecureQuSecure · undated page, accessed October 27, 2026 · Tier A
  5. [5]QuSecure Appoints Brian Cunningham as EVP Strategy & Growth to Scale Federal and Commercial Adoption of Post-Quantum SecurityBusiness Wire · published February 11, 2026 · Tier A
  6. [6]QuSecure Recognized in the Gartner® Coolest Vendor Innovations in Data Security Report for its Post-Quantum Cryptography SolutionBusiness Wire · published September 22, 2026 · Tier A
  7. [7]QuSecure Awarded Follow-On U.S. Air Force Contract for Post-Quantum Cybersecurity Solutions to Strengthen National DefenseQuSecure · published January 8, 2025 · Tier A
  8. [8]About QuSecure | The Company Leading Crypto-AgilityQuSecure · undated page, accessed November 10, 2026 · Tier A
  9. [9]QuSecure Named a Gartner Cool Vendor in Data Security | QuSecureQuSecure · published September 22, 2026 · Tier A
  10. [10]QuSecure on 3 Ways to Accelerate Your Quantum SecurityQuSecure · undated page, accessed November 10, 2026 · Tier A
  11. [11]NIST Addressing Future Post-Quantum Cybersecurity Threats Today | QuSecureAmerican Security Today · published July 6, 2022 · Tier A
  12. [12]Arrow Electronics Signs Agreement with US-based Company | QuSecureGEO SPATIAL WORLD · published January 27, 2023 · Tier A
  13. [13]QuSecure Achieves Post-Quantum Encryption BreakthroughQuSecure · published January 18, 2023 · Tier A
  14. [14]Be Quantum Safe while Achieving HR 7535 Compliance with QuSecure | QuSecureQuSecure · undated page, accessed November 10, 2026 · Tier A
  15. [15]QuSecure Appoints Brian Cunningham as EVP Strategy & Growth to Scale Federal and Commercial Adoption of Post-Quantum SecurityQuSecure Inc. · published February 11, 2026 · Tier A

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