I'm making LLM outputs verifiable. Architect of critical security infrastructure protecting billions of users. Founded Google's internal "root" production security team where my methodologies uncovered sophisticated insider attacks operating undetected for years, leading to a redesign of Google's privileged access model. Built and deployed the first dynamic access control system spanning 85,000+ engineers, replacing decades of static privilege assignment. As the founding head of security for Google's AI healthcare initiative, I designed architectures that enabled compliant, secure storage and processing of millions of Americans' medical records. Regularly identified and eliminated attack vectors in Google's core infrastructure through novel exploitation techniques, establishing new hardening standards across the company. During my PhD in supercomputing efficiency, I developed foundational algorithms for fault tolerance and resilience for the world's largest supercomputers in conjunction with Oak Ridge and Sandia National Laboratories. My research continues to protect against silent data corruption in the largest supercomputers and GPU-accelerated clusters at unprecedented scale. I've scaled Teclada Inc. to deliver next-generation security infrastructure, solving urgent needs in AI system security, remote access, and auditability for global enterprises. See https://www.fiala.me/ for a retro look at my history. YC W23 alumni