Information Systems Security: 21st International Conference, Iciss 2025, Indore, India, December 16-

This book constitutes the refereed proceedings of the 21st International Conference on Information Systems Security, ICISS 2025, held in Indore, India, during December 16-20, 2025.

The 15 full papers and14 short papers included in this volume were carefully reviewed and selected from 93 submissions. They were organized in topical sections as follows: Access Control; AI for Security; Applied Cryptography; Cyber Security Case Study; Fraud Detection; Intrusion Detection; Malware Detection; Network Security; Privacy; and System Security.