This volume addresses critical advancements in Information Assurance and Security through the lens of Hybrid Intelligent Systems. It presents 48 selected papers from the 23rd International Conference on Hybrid Intelligent Systems (HIS 2023) and the 19th International Conference on Information Assurance and Security (IAS 2023). The conference, held across multiple international locations and online, focused on synergistic combinations of AI approaches for next-generation intelligent systems. The contributions, originating from 44 countries, offer a comprehensive overview of current research and development in the field.

This collection is presented as a valuable reference for professionals and academics in artificial intelligence and information/network security. The broad international participation from 44 countries suggests a diverse range of perspectives and research methodologies. The focus on hybrid intelligent systems indicates a forward-looking approach to developing advanced security solutions. The compilation of papers from a major international conference implies a curated selection of current and relevant research in the field.