This presentation focuses on the psychological and behavioral characteristics of sex abusers, with a focus on Internet offenders. The presenter reviews the extant literature in the field of child sexual exploitation and addresses important issues for investigators, prosecutors, probation officials, treatment providers, and others who work in the field. These include identifying the motivational pathways that underlie crimes against children, highlighting challenges in the area of risk assessment, and describing issues that relate to the treatment and management of online offenders.