Critical National Infrastructure (CNI) refers to the essential systems, assets, and services that are fundamental to a country’s security, economy, and public health. This includes sectors such as energy, water supply, transportation, healthcare, and communications. Disruption or damage to CNI can have severe consequences for society, making its protection a top priority for governments and organizations. Safeguarding CNI involves both physical and cybersecurity measures to ensure the continued functioning of these vital services.