Fabraix
YC S26San 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.
AI & Machine LearningCybersecurityEnterprise SoftwareArtificial IntelligenceReinforcement LearningUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (S26)
Fabraix was founded in 2026 by Ahmed Aly and ibrahim abdu.
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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.
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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.

