This book contains best selected research papers presented at ICISS 2024: International Conference on Intelligent Systems and Security. The conference will be held at Indian Institute of Engineering Science and Technology, Shibpur, India during 20 - 22 December 2024. The book covers state-of-the-art as well as emerging topics pertaining to intelligent systems and applications, artificial intelligence (AI) and machine learning (ML) algorithms and techniques, intelligent data analysis and decision support systems, natural language processing and understanding, computer vision and pattern recognition, robotics and autonomous systems, internet of things (IoT) and intelligent systems integration, network and system security, physical layer security, security in cloud computing, big data, and IoT environments, intelligent surveillance and monitoring systems, security in intelligent transportation systems, ethical and legal implications of intelligent systems and security, and societal impact and implications of intelligent systems and security.