Artificial Intelligence is reshaping cybersecurity by enabling predictive threat detection, automated response and smarter risk management. This article explores how AI and machine learning models—from supervised classifiers to generative adversarial networks—are applied to intrusion detection, phishing mitigation and insider threat analysis. It also covers practical risks, attacker tactics and how to evaluate AI-based security tools. Whether you're building in-house models or assessing vendor solutions, this guide helps you move from hype to hands-on defence.