Communications in Computer and Information Science

This book constitutes the refereed proceedings of the 6th International Conference on EISA--Emerging Information Security and Applications, EISA 2025, held in Hangzhou, China, during December 12-13, 2025.The 10 full papers included in this book were carefully reviewed and selected from 38 submissions. This conference focuses the need for emerging techniques, theories and applications to protect information and practical security.