Hadrian raises €35.7M to scale agentic AI for continuous offensive security

Hadrian (Amsterdam / London) has raised €35.7 million (~$40M) in a new round co-led by Forgepoint Capital International and SmartFin, with HV Capital, Motive Partners, Picus Capital, and Oetker Ventures participating. No stage label was attached to the announcement. The company was founded in 2021 by Rogier Fischer (CEO), Olivier Beg, and Maurice Clin, and has raised approximately €58 million in total across its five-year life.

Editorial note: The round's size and total raise are above what this publication typically covers for unlabelled rounds. No Series B designation appeared in any source, and this article does not assert one. Hadrian is included because the sources carry no exclusionary stage label; the scale is noted plainly.

Agentic AI for the attack surface

Traditional offensive security runs in cycles: a red team engagement lasts weeks, produces a report, and then the organisation waits until the next engagement to learn what has changed. Hadrian's proposition is continuous coverage. Its platform uses AI agents to map the attack surface automatically — crawling internet-exposed assets, discovering misconfigurations, identifying exploit paths, and simulating lateral movement — and updates its findings in real time as the environment changes.

The architecture is agentic in a specific sense: the agents reason about novel attack surfaces rather than running scripted playbooks. A scanner finds known CVEs against known assets; Hadrian's agents are intended to discover attack paths that require chaining multiple vulnerabilities or misconfigurations in ways that scripted automation would not identify.

HV Capital's busy week

HV Capital appears as an investor in three ProYarn stories this week: it co-led Ore Energy's €37M Series A in August for long-duration energy storage and backed Rivercell's €22M Seed in AI drug-target discovery earlier this week. The Hadrian participation adds cybersecurity to a portfolio that spans climate hardware and computational biology — a range that suggests HV Capital's growth-stage team is operating across sectors rather than from a vertical thesis.

Forgepoint Capital International — the European arm of Forgepoint Capital, which backed Sherpa.ai (Basque data-sovereign AI) — deepens its European cybersecurity commitment with this co-lead. SmartFin brings Benelux distribution depth.

Scale and the questions it raises

"Offensive security at enterprise scale requires autonomous agents, not consultants with laptops," said Fischer. "Hadrian's platform runs continuously without human bottlenecks."

The €35.7M go-to-market push targets enterprise security teams in Europe and North America. At €58M total raised for a five-year-old company, Hadrian is well past the experimental stage and into sustained commercial execution — the round's scale reflects that. Enterprise security procurement is conservative and relationship-driven; the next 18 months will show whether continuous autonomous offensive testing can displace embedded red-team relationships, or whether it ends up as a complement to them.