Hadrian is an Amsterdam-based agentic AI offensive security platform that continuously maps an organisation's external attack surface and validates which exposures are genuinely exploitable — delivering proof, not noise. Its two flagship products are Atlas, which performs continuous external exposure management by discovering all internet-facing assets (including forgotten systems and shadow IT) and testing them around the clock, and Nova, an on-demand agentic pentesting engine that chains small flaws into real attack paths with full evidence.

Founded in 2021 by former teenage ethical hackers Rogier Fischer and Olivier Beg alongside entrepreneurs Maurice Clin and Tijl van Vliet, Hadrian was built to let defenders operate at the same speed as modern attackers. Its proprietary AI orchestrator is trained by elite offensive security practitioners and emulates real adversary techniques, reducing alert noise by 99.4% so security teams receive only verified, exploitable risks with reproduction steps and remediation guidance.

Hadrian serves enterprise customers across financial services, healthcare, maritime, aviation, energy, manufacturing and technology sectors in Europe and the US. Clients include McKesson, NBCUniversal, TotalEnergies, Amadeus, Leroy Merlin, Damen Shipyards and Crédit Agricole. The platform has been recognised as a leader by Gartner, GigaOm and Frost & Sullivan in the adversarial exposure validation and attack surface management categories.

As of October 2026 the company employs approximately 105 people and has raised $65 million in total funding. Its most recent $40 million Series B, co-led by Forgepoint Capital International and SmartFin, will fund expansion across EMEA and the US and deepen investment in engineering and security research.