Law enforcement agencies worldwide, including those in Australia, have declared partnerships with the private sector to police e-crime as “critical”. However, this strategy faces uncertainties about appropriate formats and the potential for fostering corruption. Sarre and Prenzler’s (2000) Regulated Intersections model proposes that, to avoid corruption, cooperation must be limited and regulated closely. Consequently, this thesis examines the conditions under which investigative partnership policing of e-crime at the state police level can be mutually beneficial to police and the private sectors, while maintaining public interests. The thesis aims, therefore, to establish normative standards and guidelines for configuring effective and ethical public-private partnerships for e-crime investigation. An exploratory analysis of 3529 e-crime incidents, reported to and cleared by Victoria Police during 1999/00 to 2003/04, investigated the nature of reported e-crime, routine factors affecting its successful investigation and whether partnership was one of those factors. A pilot survey canvassed private sector responses to these issues and partnered e-crime investigation. Thirty-seven interviews were conducted with police, private investigators and e-crime victims. During the research, three Australian attempts at public-private investigative partnership formed to varying success, including the Joint Banking and Finance Sector Investigation Team (JBFSIT) at the Australian High Tech Crime Centre.