Fabraix was founded by Ahmed Aly, ibrahim abdu in 2026.

Who are Fabraix's investors?

Fabraix's investors include Vela Partners, Y Combinator.

Where is Fabraix headquartered?

Fabraix is headquartered in San Francisco, US.

Fabraix

San Francisco, US · Founded 2026 · 2 employees · 2 known investors

Find your way into Fabraix

591 people in our graph share verified history with the Fabraix team — schools, employers, funds. One of them is your warm intro.

Mariaunlockedknows Ibrahim Abdu · together at University of Oxford (overlapped)

knows the team · via University of Oxford

×10knows the team · via Y Combinator

Fabraix develops automated security testing software that probes AI agents for vulnerabilities using adaptive attack techniques, enabling companies to continuously validate the safety of customer-facing AI systems without manual penetration testing.

AI & Machine Learning Cybersecurity Enterprise Software Artificial Intelligence Reinforcement LearningUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (S26)

Fabraix was founded in 2026 by Ahmed Aly and ibrahim abdu.

Ahmed Aly in 𝕏Co-FounderAhmed Aly is co-founder of Fabraix, a startup developing tools to identify failure modes and security vulnerabilities in AI systems. He previously served as an early data scientist at Sequoia-backed Two, where he developed fraud detection systems for B2B payment processing, and has published research in peer-reviewed journals.

ibrahim abdu inCo-FounderIbrahim Abdu is a software engineer who previously worked at Meta on AI agent systems and held early engineering roles at Two, a Sequoia-backed B2B startup. He also developed a proprietary compiler and database at TradingHub for algorithmic trading detection, and holds a BA in Philosophy, Politics and Economics from Oxford University.

Investors · 2

Vela PartnersSan Francisco · $100K – $500K

Y CombinatorSan Francisco · $500K

Frequently asked questions

What does Fabraix do?: Fabraix develops automated security testing software that probes AI agents for vulnerabilities using adaptive attack techniques, enabling companies to continuously validate the safety of customer-facing AI systems without manual penetration testing.
Who founded Fabraix?: Fabraix was founded by Ahmed Aly, ibrahim abdu in 2026.
Who are Fabraix's investors?: Fabraix's investors include Vela Partners, Y Combinator.
Where is Fabraix headquartered?: Fabraix is headquartered in San Francisco, US.