Aplikacja Fabraix do YC

Summer 2026Active

San Francisco

Fabraix przeszedł przez Y Combinator w batchu Summer 2026 jako firma z branży B2B. Poniżej: czym zajmuje się firma, kto ją założył i jej aplikacja do YC, zrekonstruowana pytanie po pytaniu w prawdziwym formularzu YC.

Batch YC: Summer 2026
Branża: B2BSecurity
Lokalizacja: San Francisco
Wielkość zespołu: 2
Status: Active
Wystartowano: 2026

Foundersi

Ahmed AlyFounder/CEO
ibrahim abduFounder/CTO

Czym zajmuje się Fabraix

Fabraix builds state-of-the-art AI red-teaming agents that continuously detect security vulnerabilities in customer-facing AI. Our product, Nyx, has already found vulnerabilities in agents at dozens of Fortune 500 companies. On AgentHarm, the leading benchmark for offensive AI security, Nyx achieved a 78% attack success rate, compared with 67% for GPT-5.6 Sol. AI agents can change more often than teams can test them. A new model, prompt, tool, permission, or data source can change what an agent does, even when the application code stays the same. And AI is also increasing how much software companies produce and how often it changes. We built Nyx to automate the work required to red-team AI agents. It is multi modal by design and interacts with the target indirectly through controlled replicas of SaaS products and websites that we maintain, placing malicious payloads in webpages, documents, files, messages, and tool outputs to test how an agent behaves under different conditions. Nyx often finds its first vulnerability within minutes or hours rather than days or weeks. Because the work is fully automated, companies can repeat the test with every change and at a much lower cost than what a 7-figure red-teaming (and point-in-time) engagement would require. We're also the team behind ACE (Adversarial Cost to Exploit), a benchmark that measures AI security in terms of how much it costs attackers to break an AI system; providing a game-theoretic framework to understand how motivated a rational attacker would be in exploiting the system.

Aplikacja Fabraix do YC, zrekonstruowana

Aplikacja Y Combinator

Fabraix, batch Summer 2026. Prawdziwe pytania z formularza, odpowiedzi na podstawie danych publicznych.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Fabraix

Describe what your company does in 50 characters or less.

AI agents that red-team other AI for security flaws.

What is your company going to make? Please describe your product and what it does or will do.

We're building Nyx, an AI agent that acts as an autonomous red-teamer to find vulnerabilities in customer-facing AI systems. It targets changes in models, prompts, tools, and data sources - areas that traditional security reviews can't keep up with. Nyx runs multimodal attacks by interacting through replicas of real SaaS products and web systems, planting payloads to test agent boundaries. The goal is to give companies a way to catch issues as fast as they ship changes, at a fraction of the cost of human red-teaming.

Where do you live now, and where would the company be based after YC?

San Francisco, CA, USA. We'll stay based here after YC.

Explain your decision regarding location.

San Francisco is where AI security buyers, technical partners, and talent are concentrated. Being here lets us move fast on product and sales.

21 dodatkowych odpowiedzi w pełnej aplikacji

Są w pełnej wersji. Utwórz darmowe konto, aby otworzyć je w YC Insights, obok każdego innego batcha YC.

Zobacz pełną aplikację

Często zadawane pytania

Czy to jest prawdziwa aplikacja Fabraix do YC?

Nie. Y Combinator utrzymuje prywatność złożonych aplikacji. Jest to rekonstrukcja: prawdziwe pytania z formularza YC, na które odpowiedziano na podstawie publicznych danych Fabraix (notatki o premierze, tło founderów, opis produktu). Pokazuje, jak firma taka jak Fabraix przedstawiłaby się YC, a nie tekst, który złożyli.