The post-Cold War trend towards the privatization of some of the security and military functions of post-conflict and conflict operations conducted by states is extending to peacekeeping operations undertaken by the UN and other organizations. This article examines the policies behind the increased use of private military and security contractors (PMSCs) in peacekeeping, considers the obstacles to accountability and responsibility caused by this development, and suggests ways of overcoming these obstacles to provide remedies for victims of human rights abuse at the hands of such contractors.