Communications in Computer and Information Science

This book constitutes the refereed proceedings of the 26th International Conference on Innovations for Community Services, I4CS 2026, held in Copenhagen, Denmark, during June 15–17, 2026.The 15 full papers and 4 short papers presented in this book were carefully reviewed and selected from 48 submissions. They are organized into topical sections as follows: Authentication and Resilience; Cybersecurity; Cyberincident Detection and Response; Artificial Intelligence for Work Processes; Artificial Intelligence for Decision Support; Smart Urban Infrastructure; and Distributed Systems.