Antigen
YC F25San Francisco, US · Founded 2026 · 5 employees · Hiring · 5 known investors
Find your way into Antigen
1,090 people in our graph share verified history with the Antigen team — schools, employers, funds. One of them is your warm intro.
Scott Raneyunlockedknows Saad Jamal · together at HashiCorp (overlapped)
knows the team · via Essential
knows the team · via University of Michigan
×6knows the team · via Y Combinator
knows the team · via UC Berkeley Electrical Engineering & Computer Sciences (EECS)
knows the team · via American Red Cross
Antigen provides continuous offensive security testing for enterprise production environments using AI agents nightly and human red teams monthly, with findings integrated into engineering tools.
Also known as Claybird · Zag · zag.dev
AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareArtificial IntelligenceUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (F25)
Antigen was founded in 2026 by Saad Jamal and Abdullah Nauman.
SJ
Saad Jamalin𝕏Co-Founder // CEOHe previously worked on machine learning infrastructure at Tesla Autopilot, developed an ML compiler framework at Nuro, and trained reasoning models with Ashish Vaswani. He also clerked at the Supreme Court of Pakistan and attended UChicago Law School.
AN
Abdullah Naumanin𝕏Co-FounderHe previously worked as a product manager at Google Ads and as an ML engineer at Google Search, where he built large-scale infrastructure for conversion measurement. Earlier in his career, he joined a YC-backed startup as an early employee, scaled a bootstrapped SaaS business, and developed low-level imaging software for semiconductor manufacturing.
Investors · 5
Transpose Platform ManagementHouston
Y CombinatorSan Francisco · $500K
8VCreportedAustin · $100K – $50M
Andreessen HorowitzreportedMenlo Park · $500K – $50M
Also in the syndicate · 1
Wing VC
Funding
SEC filings, press & company announcements- Undisclosed amountseries AJul 2022
8VC, Andreessen Horowitz, Wing VC
Source ↗
Source: company announcements and press reports — follow each round's link for the claim.
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Frequently asked questions
- What does Antigen do?
- Antigen provides continuous offensive security testing for enterprise production environments using AI agents nightly and human red teams monthly, with findings integrated into engineering tools.
- Who founded Antigen?
- Antigen was founded by Saad Jamal, Abdullah Nauman in 2026.
- Who are Antigen's investors?
- Antigen's investors include Transpose Platform Management, Y Combinator, 8VC, Andreessen Horowitz.
- Where is Antigen headquartered?
- Antigen is headquartered in San Francisco, US.