Antigen
Continuous offensive security for the enterprise.
Operating in b2b based in San Francisco, CA, USA, Antigen operates.
Profile
Antigen is an AI adversary for the enterprise. It maps, exploits, and secures your attack surface through nightly automated offensive testing and monthly human red team assessments. Every finding is delivered with traces, reproduction steps, and remediation directly in GitHub, Linear, or the Antigen Platform.
We work with companies in financial services, healthcare, retail, and government where security is trust.
We're backed by Lightspeed, DST Global, and Susa Ventures.
Its activity falls under b2b; the profile below is assembled from public directory data.
The business is associated with San Francisco, CA, USA.
Its current recorded stage is Fall 2025.
Recorded headcount: 3 employees.
Directory analysis
Antigen is a San Francisco‑based B2B startup that offers continuous offensive security for enterprises. It uses an AI adversary to map, exploit, and secure attack surfaces through nightly automated testing and monthly human red‑team assessments, delivering findings directly into GitHub, Linear, or its own platform. The company serves sectors such as financial services, healthcare, retail, and government, and is backed by Lightspeed, DST Global, and Susa Ventures.
Positioning: Antigen positions itself as a hybrid automated and human‑driven red‑team solution, targeting organizations that require ongoing security validation. Its focus on integration with development tools and high‑trust sectors suggests a niche market within enterprise security operations.
Note: Antigen provides AI‑driven, continuous offensive security testing for enterprises.
Auto-generated directory analysis from public data · updated 8 Oct 2026. Informational only, not investment advice.
| Sector | B2B |
|---|---|
| Headquarters | San Francisco, CA, USA |
| Country | USA |
| Employees | 3 |
| Stage | Fall 2025 |
Website: antigen.sh
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