Company

Accelerating enterprise defense at agentspeed.

Antigen runs continuous offensive security against your production environment. AI agents every night. A human red team every month. Every finding synced to your engineering tools.

Our perspective

The threat landscape changed faster than defense did.

For decades, defense rested on quarterly pen tests, point-in-time audits, and PDF reports. The assumption was that attackers operated at human speed - limited by the number of researchers a firm could hire and the hours they could work.

That assumption is gone. AI now runs continuously against production systems, adapts in real time, and reaches conclusions that human-only assessments miss. The asymmetry between offense and defense widens every quarter.

We built Antigen because enterprise defenders need parity with AI-armed attackers. Continuous offensive testing - conducted ethically and rigorously - is the response.

Backed by world-class investors.

Y CombinatorLightspeedSusa VenturesDST Global
We're hiring

Help close the asymmetry.

We're hiring across security research, infrastructure, and product. If you've thought about the gap between attacker capability and defender tooling - and want to build the response - we'd like to hear from you.

See open positions

Reach our team

For press inquiries about our platform or our security research.