Cyber Reasoning System: The Origin of AI Security and Agentic Defense

This article traces the evolution from early autonomous systems like DARPA-funded research and the 2014 Cyber Grand Challenge to modern Agentic AI and LLM-driven cyber reasoning, arguing that advances in autonomous reasoning, fuzzing, symbolic execution, and automated patching are converging toward self-healing, context-aware security systems that augment human defenders rather than replace them.