Adrianna Valle handles hands-on product security at Klaviyo, where she specializes in AI security architectures, account takeover (ATO) prevention, and building secure architectural patterns. Transitioning from a background in full-stack and data engineering, Adrianna brings a practical, systems-level approach to enterprise defense. She is a no-frills communicator who favors straightforward, easy-to-understand concepts, ensuring her audience takes away the practical knowledge required to solve complex problems. Her current work focuses on making autonomous systems safer and more efficient, such as designing graph-based agent architectures that eliminate tool hallucinations and building frameworks to audit AI reasoning loops. A vocal advocate for shifting security from brittle prompt tuning to the data and execution layers, Adrianna is dedicated to providing engineers with the blueprints needed to move agentic systems out of the sandbox and securely into production.