This book gathers a collection of high-quality peer-reviewed research papers presented at International Conference on Cyber Intelligence and Information Retrieval (CIIR 2023), held at Institute of Engineering & Management, Kolkata, India during 14 – 15 December 2023. The book covers research papers in the field of privacy and security in the cloud, data loss prevention and recovery, high performance networks, network security and cryptography, image and signal processing, artificial immune systems, information and network security, data science techniques and applications, data warehousing and data mining, data mining in dynamic environment, higher order neural computing, rough set and fuzzy set theory, and nature inspired computing techniques.