This book comprises the refereed proceedings of the 3rd International Conference on Security, Privacy, and Data Analytics (ISPDA 2024). It covers a wide range of topics, including big data and analytics, cloud security and privacy, data intelligence, hardware security, network security, blockchain technology and distributed ledger, machine learning for security, and more. The volume features novel contributions and the latest developments from researchers in both industry and academia, addressing security, privacy, and data analytics from technological and social perspectives. This book will serve as a valuable reference for researchers, instructors, students, scientists, engineers, managers, and industry practitioners worldwide.