AI agents are starting to reshape enterprise IT, forcing security leaders to cut through the marketing hype and identify true innovations. Using recent CyberSecEval benchmarks, we'll examine what these technologies can and cannot do in real security applications. We'll compare how AI agents impact both attack and defense, determining if either side gains a decisive advantage. Through practical examples, we'll see how these agents are already at work in security operations. Finally, we'll explore emerging design patterns and security principles, giving leaders clear direction on safely navigating the AI revolution in cybersecurity.