IoT Security introduces students to the security challenges of modern Internet of Things systems, combining solid theoretical foundations with hands-on security practice. The course covers IoT architectures, threat modelling, cryptography, secure communication protocols, and web and network security in connected environments. Through practical penetration testing exercises and Capture the Flag challenges, students learn to identify vulnerabilities, exploit them responsibly, and design effective mitigation strategies. The course also engages with current research and real-world attack trends, preparing students to assess and strengthen the security of complex IoT deployments in professional settings.