What is the Critical Entities Resilience (CER) Directive? | UpGuard

**Executive summary:** The Critical Entities Resilience (CER) Directive is an EU framework to strengthen cyber and operational resilience of critical infrastructure across eleven sectors by requiring Member States and identified critical entities to adopt resilience strategies, conduct regular risk assessments, report incidents (within 24 hours), enable cross-border cooperation, and enforce compliance through designated competent authorities and the Critical Entities Resilience Group (CERG); the document outlines key obligations (Articles 4–21), sector coverage, timelines for national measures and strategy adoption, and recommended steps for entities to achieve compliance.