Publications of the Prime Minister’s Office 2024:13 Cybersecurity The measures for protecting communication and data systems and other electronic systems, the data to be stored, processed or transferred therein, and their users, appliers and other relevant persons from cyber threats. Cyber threat A potential situation, event or activity that may harm or disrupt communication networks and information systems, users of such systems and other people, or that may otherwise harmfully affect them. Infrastructure critical for defence capability The structures, services and related functions of the defence system and critical infrastructure, and the vital functions of society that are essential to the operating conditions of national defence in all states of preparedness. Military cyber defence The measures taken to protect the systems and the stakeholders in various sectors that affect Finland’s defence capability, particularly against state-sponsored hostile operators and their agents, in order to ensure defence capability, and to safeguard the sovereignty of Finland and implement military cyber operations. National cyber defence The national and international military and civilian measures that secure the sovereignty of Finland and the living conditions of its population against external state-sponsored cyber threats and incidents, and the required countermeasures taken in all states of preparedness. National cybersecurity The measures that enable a digital society to prepare for, identify, combat and withstand incidents in electronic and networked systems, and the impacts of these incidents on vital functions and services of society, to recover from them, and to assist in ensuring the operating conditions of national security, national defence and security of supply. 50