"This Conflict Series Brief examines the current practices and future possibilities of preventive action in relation to conflict in cyberspace. When categorising state uses of ICTs as a form of conflict, attention should be paid to three considerations. First, hostile uses of ICTs rarely occur outside of a pre-existing or broader politico-military dispute. Second, a malicious state use of ICTs can lead to an escalation in pre-existing adversarial relations. Third, the use of cyber capabilities in a conflict situation often includes the targeting of civilian infrastructure and therefore has wide-ranging implications for the proper functioning of societies. Against this background, this Brief argues that the use of malicious cyber tools for power projection can and must be prevented."