Fundraising Fox

Fabraix

YC S26

San Francisco, US · Founded 2026 · 2 employees · 1 known investors

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.

Founders & leadership· Y Combinator alumni (S26)

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

AAAhmed Aly
Ahmed Alyin𝕏Co-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.
IAibrahim abdu
ibrahim abduinCo-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 · 1

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 Y Combinator.
Where is Fabraix headquartered?
Fabraix is headquartered in San Francisco, US.