Security startups in Europe

OpenAPI-first API security that audits the contract, tests it, then wraps a micro-firewall around the live endpoint.

Released OAS 3.1 support for API Protection in the 42Crunch platform, February 2026

Security review, handled. Your AI agents keep shipping; Aevral, a security agent, reviews their changes for security problems and suggests the fix, on pull requests and whole-repo scans, live and self-serve. Open-source models, processed in the US today; an EU-only option is announced. By ISMS Copilot.

Live and self-serve at aevral.com, 2026-09-07

One platform that scans code, cloud, and runtime, then triages and auto-fixes what is actually reachable.

Raised $60M Series B at a $1B valuation, January 2026

Universal artifact control plane for what AI and humans actually put into production.

Raised $72M Series C led by TCV and Insight Partners, April 2026

Hacker-powered surface monitoring for domains, apps, and APIs, now with an MCP server for AI workflows.

Launched a Detectify MCP server for AI security workflows, 2026

AI pentesting for APIs and web apps that proves exploitability, including IDOR and business logic, not just crawler noise.

Raised $18M to expand agentic pentesting for APIs and business logic, March 2026

Runtime security built into the firmware of connected devices, robots, and other physical AI, plus build-time firmware analysis mapped to the EU CRA.

Raised $270M at a $1.7B valuation in a round led by Headline, September 2026

Security and governance platform that discovers the AI agents running across an enterprise, records how they behave, scores their risk and constrains them at runtime.

Raised a $30M Series A led by Balderton Capital, May 2026

Secrets detection plus NHI lifecycle, from leaked keys in git to the agents still using them.

Raised $50M Series C led by Insight Partners, February 2026

Outside-in autonomous hacker that discovers, exploits, and validates external exposure continuously.

Shipped Sense, Plan, Attack AI agents to operationalize CTEM, November 2025

ANSSI-certified French EDR for buyers who cannot put a US cloud agent on sensitive endpoints.

Added Attack Surface Management to its endpoint platform, September 2025

AI agents that investigate cloud and code vulnerabilities, reproduce attacker steps to confirm which are exploitable, and drive the fixes for security teams.

Raised a $25M Series A led by Theory Ventures, June 2025

Attacker-style recon and automated red team for models, agents, IDEs, and the systems around them.

Raised $30M Series A led by Album VC, August 2026

European agentic SOC that turns every alert investigation into posture insight.

Raised $30M co-led by Partech and Forgepoint Capital International, March 2026

Email authentication and brand protection that gets domains to DMARC enforcement without a DNS circus.

Won a 2025 Cybersecurity Excellence Award for OnDMARC, March 2025

Supplier security as a shared network: each supplier keeps one security profile that every connected customer can see, instead of answering questionnaires one by one.

Raised a GBP 24M Series B led by Axiom Equity, July 2026

Workflow automation that security teams actually own, now with agentic AI on top.

Raised $125M Series C at a $1.13B valuation, February 2025

Agentic security platform that reads code, infrastructure, configurations and AI agents together, prioritizes real attack chains, and verifies each fix, for teams shipping agents quickly.

Came out of stealth with a $13M seed round led by LocalGlobe and Cambridge Innovation Capital, April 2026

Agentless identity fabric for human, machine, and AI identities across hybrid cloud and on-prem.

Raised $5M seed led by VentureFriends and DFF Ventures, April 2025

Control architecture that runs sensitive AI and high-consequence workloads in customer-controlled, compartmentalised environments, including on hyperscaler clouds.

Raised a $50M Series A led by New Enterprise Associates, July 2026

SCA plus malware and pipeline security for teams whose code is increasingly written by agents.

Won Global Infosec awards for ASPM and GenAI application security, 2026