Critical Information Infrastructures Security

This book constitutes the refereed proceedings of the 20th International Conference on Critical Information Infrastructures Security, CRITIS 2025, held in Jönköping, Sweden, during October 21-23, 2025.

The 22 full papers presented in this volume were carefully reviewed and selected from 38 submissions. They were grouped into the following topics: Methods & Practice; Power Grids; Security and Safety Large and Small; Vehicles; Methods; Knowledge, Skills and Education; AI and Critical Infrastructures; Security Frameworks.