Ben Kereopa-Yorke is a Senior Security Researcher at Microsoft, based in Melbourne, working on AI security, security research, red teaming, and agentic systems. His work sits at the intersection of technology and human security, and he does active research and writing across AI security, cyber security, and socio-technical risk.

He co-leads the OWASP Machine Learning Security Top 10, serves as an Associate Editor for IEEE Transactions on Technology and Society, and is a member of the Australian Computer Society Professional Standards Board. His research has peer-reviewed publications spanning AI security, cyber security, human-computer interaction, Brookings, and Oxford Intersections: AI in Society. His public work also includes open technical projects on GitHub and Hugging Face, where he publishes under the name Zen0.

Ben Kereopa-Yorke has been recognised publicly with the 2025 Charles Sturt University Alumni Award for Professional Excellence, and his public writing emphasises practical AI security, governance, and Pacific perspectives on AI safety. He speaks and writes regularly on how real-world AI systems fail, how agentic security workflows are changing offensive and defensive practice, and what organisations need to do to secure the next generation of AI-enabled systems.