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We're Arsen: a cybersecurity startup on a mission to make humans the strongest link in security. We build AI-powered simulations of how hackers try to sneak into corporate accounts and tools (things like phishing, vishing, or smishing), to help organizations reduce human risk and avoid data breaches or malware.
Arsen is growing fast and backed by top investors. Come build with us!
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Founded in 2020, Arsen started with a simple truth: a vast majority of breaches start with people, not systems.
We raised €2.5M from Elaia and French Founders, built the most advanced human risk platform on the market, and scaled to hundreds of customers worldwide. Today, resellers across the globe are part of our growth engine, and the world's top firms are coming to us. We're just getting started.
At Arsen, we turn the latest cyber threats into training opportunities, keeping teams one step ahead. We build the tools that help organizations stay ahead of attackers. That means staying ahead ourselves. The threat landscape moves fast. Bad actors (hackers) are getting sharper, leveraging gen AI and increasingly sophisticated social engineering tactics to bypass defenses and manipulate employees. We live in that reality every day: tracking emerging threats, doing deep OSINT work, and making sure our platform reflects what our customers are actually up against. We're a small, high-trust team that moves quickly and experiments freely. No red tape, no "let's committee that." If you have an idea worth trying, we try it, and we're not afraid to be wrong on the way to being right.
“With deepfakes and AI-driven attacks dominating conversations in the cyberspace, demand for what we build has never been higher, and top firms worldwide are taking notice. We're looking for ambitious, resilient people who thrive in an environment where not everything is figured out yet. If that excites you, you'll grow faster here than anywhere else."
Thomas, CEO & co-founder
Thomas Le Coz
CEO & Co-Founder
Alexandre Esser
CTO & Co-Founder