Cybersecurity Funding Quantum Bridge Raises $8 Million for Quantum-Safe Key Distribution Solution The new Series A funding round brings the total raised by Quantum Bridge to $16 million. By SecurityWeek News | May 20, 2026 (11:45 AM ET) Flipboard Reddit Whatsapp Whatsapp Email 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. Advertisement. Scroll to continue reading. 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 Written By SecurityWeek News More from SecurityWeek News In Other News: Big Tech vs Canada Encryption Bill, Cisco’s Free AI Security Spec, Audi App Flaws Webinar Today: ROI for Cyber-Physical Security Programs Exaforce Raises $125 Million for Agentic SOC Platform In Other News: Train Hacker Arrested, PamDOORa Linux Backdoor, New CISA Director Frontrunner Webinar Today: Securing Identity Across Humans, Machines and AI Autonomous Offensive Security Firm XBOW Raises $35 Million In Other News: Scattered Spider Hacker Arrested, SOC Effectiveness Metrics, NSA Tool Vulnerability Webinar Today: A Step-by-Step Approach to AI Governance Latest News Microsoft Rolls Out Mitigations for ‘YellowKey’ BitLocker Bypass AI-Powered App Attacks Are Faster, More Frequent and Harder to Stop 1Password Teams With OpenAI to Stop AI Coding Agents From Leaking Credentials Anthropic Silently Patches Claude Code Sandbox Bypass Over 320 NPM Packages Hit by Fresh Mini Shai-Hulud Supply Chain Attack Caught Off Guard: Securing AI After It Hits Production Real-World ICS Security Tales From the Trenches Virtual Event Today: Threat Detection & Incident Response Summit Trending Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts. 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