QuSecure

QuSecure, Inc. is a post-quantum cryptography (PQC) and crypto-agility software company. Its flagship platform, QuProtect (current generation QuProtect R3), discovers the cryptography in use across a network, builds a cryptographic inventory, changes algorithms by policy at the network layer without application code changes, and generates CycloneDX cryptographic bills of materials (CBOM) on demand. Additional capabilities include no-code remediation, PKI and certificate lifecycle management, and central orchestration of cryptographic policy.

The platform is a patented, software-only security architecture that overlays onto a customer's existing infrastructure. Earlier descriptions characterize QuProtect as an end-to-end quantum-security-as-a-service (QSaaS) architecture combining zero trust, quantum-resilient technology and crypto-agility to protect networks, cloud systems, edge devices and satellite communications with minimal disruption to existing systems. QuSecure states it supports NIST algorithms ML-KEM (FIPS 203, including ML-KEM-1024 for CNSA 2.0 alignment), ML-DSA (FIPS 204) and SLH-DSA (FIPS 205), plus hybrid post-quantum TLS via X25519MLKEM768; encryptors carry legacy connections, including TLS 1.0 and 1.1 on unpatchable systems, over TLS 1.3 at the network layer. The company positions itself as a security company rather than a quantum computing company, noting the product requires no quantum hardware.

QuProtect R3 is described as backwards compatible with legacy infrastructure and operable across cloud, on-premises, air-gapped and sovereign environments, supporting compliance regimes including CNSSP 15/NSM-10, CNSA 2.0, PCI DSS and DORA.

Founding story

QuSecure was founded in 2019 by a team that includes Dave Krauthamer, Rebecca Krauthamer, Skip Sanzeri and Konstantin Vilk, assembling quantum technology experts, cryptographers, former intelligence community members and serial entrepreneurs around the goal of protecting enterprises and government from quantum and classical cybersecurity threats. Rebecca Krauthamer, who studied Symbolic Systems at Stanford with a specialization in artificial intelligence and previously led the quantum computing venture studio Quantum Thought, co-founded the company and served as its first VP of Engineering and later Chief Product Officer.

Business model

QuSecure licenses software to enterprises and government agencies. The product is delivered as a software-only overlay and has been described as a quantum-security-as-a-service architecture deployed over existing infrastructure and devices, with no application rewrites required. The company also participates in U.S. government SBIR programs and sells to federal buyers through procurement vehicles including Carahsoft's GSA Schedule contract.

Revenue comes from sales of the QuProtect software platform to enterprise and government customers, supplemented by federally funded SBIR contracts; an SBIR registry profile places the company in a $1.5M-$2M revenue range as of its last profile update.

Traction

Customers include U.S. defense agencies (U.S. Army and U.S. Air Force), global financial institutions, telecommunications and energy companies, critical infrastructure providers and global cloud service providers. Published case studies cover live post-quantum sessions over legacy satellite links for defense, cipher rotation across 4,000 services at a bank without interrupting traffic, post-quantum TLS across existing telecom infrastructure, and post-quantum encryption on SCADA and industrial control systems for an oil and gas operator. The company has received SBIR awards totaling roughly $299,014 in Phase I dollars across Air Force projects, plus a listed 2023 Army project valued at $1,948,754, and completed joint PQC projects with Accenture including a multi-orbit communications test and a Banco Sabadell adoption project.

Latest developments

In February 2025 QuSecure closed additional Series A funding led by Two Bear Capital with participation from Accenture Ventures, bringing the round to $28 million, and named co-founder Rebecca Krauthamer CEO. Company press releases in 2026 report availability of its post-quantum cryptography solutions on Carahsoft's GSA Schedule contract (August 11, 2026), a Gold award at the 23rd Annual International Business Awards for QuProtect R3 (August 25, 2026), and delivery of field-ready post-quantum cryptography and crypto-agility for the U.S. Army at Project Convergence Capstone 6 (September 2, 2026).