Deliverable 4.1. Guidelines on cybersecurity civil- defence cooperation

This public deliverable is part of the COcyber Work Package (WP) 4 "Know-how, good practice sharing, and information transfer activities". COcyber is a two-year initiative supported by the European Commission and European Cybersecurity Competence Centre to foster the collaboration of civilian and defence cybersecurity sectors. This report summarises the research activities carried out under Task 4.1 of the COcyber project, which focuses on identifying and validating best practices to strengthen cybersecurity cooperation between the civilian and defence sectors across the European Union. As cyber threats increasingly blur the boundaries between civilian and military domains, establishing structured and effective collaboration models is becoming essential to building a resilient and unified European cybersecurity ecosystem. The objective of Task 4.1 was to identify at least ten transferable best practices that illustrate successful examples of civil-defence cooperation. These practices were selected through a rigorous process combining desk research, stakeholder consultations, and a validation and rating phase with cybersecurity experts from across Europe. Disclaimer The COcyber project funded under Grant Agreement No. 101158606 is supported by the European Cybersecurity Competence Centre and funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Cybersecurity Competence Centre. Neither the European Union nor the European Cybersecurity Competence Centre can be held responsible for them. The contents of this deliverable are presented for informational purposes only and are subject to the pending approval of the European Commission (EC). The information, data, and conclusions presented herein may undergo revisions or modifications following the review and approval process by the European Commission. Recipients of this document are advised that any actions, decisions, or reliance on the information provided should be exercised with caution until the final approval from the European Commission is obtained. The authors and distributors of this deliverable shall not be held liable for any consequences arising from the use of information that has not yet received official European Commission approval.