Quantum Bridge Raises $8 Million for Quantum

Toronto, Canada-based Quantum Bridge announced on Wednesday that it has raised $8 million in Series A funding for its quantum-safe key distribution solution. The new funding, which brings the total raised by the company to $16 million, was supported by Wayra (Telefónica), Cadenza VC, Club degli Investitori angels, HPE, and Bacchus Venture Capital. Founded in 2019, Quantum Bridge has developed a quantum-safe cybersecurity solution built around its patented Distributed Symmetric Key Establishment (DSKE) protocol, a key distribution technology that automates the creation and distribution of symmetric keys. DSKE uses pre-shared random data between clients and a group of Security Hubs, with a secret-sharing scheme that ensures no individual Security Hub ever holds the final key, providing protection against both classical and quantum attacks. The company’s primary product, the Symmetric-Key Distribution System (SDS), packages DSKE alongside post-quantum cryptography (PQC) and quantum key distribution (QKD) into a single crypto-agile platform. SDS integrates into existing network infrastructure without architectural changes, and uses an Ansible-based automation tool to handle installation and configuration. The solution can be deployed for network appliances or as an endpoint-based system. The solution is advertised for the government and defense, finance, critical infrastructure, and communications sectors. “National security can’t wait for perfect conditions,” said Mattia Montagna, co-founder and CEO of Quantum Bridge. “We build quantum-safe systems that work inside real networks today — systems designed to keep protecting sovereign communications as the threat landscape evolves.” Related: Frame Security Emerges From Stealth With $50M for Awareness and Training Platform Related: White Circle Raises $11 Million for AI Control Platform Related: Exaforce Raises $125 Million for Agentic SOC Platform Related: Boost Security Raises $4 Million for SDLC Defense Platform