Casco

Casco is a San Francisco cybersecurity startup that runs autonomous, AI-driven penetration tests on web apps, APIs, cloud infrastructure, and AI systems. Founded in 2025 by ex-AWS engineers Rene Brandel and Ian Saultz, it pairs continuous machine-driven attack simulation with human security experts, delivering compliance-ready reports for standards like SOC 2, ISO 27001, and the EU AI Act. A Y Combinator (X25) company, Casco says it serves 300+ companies and secures AI systems used across a majority of the Fortune 500.