PURPOSE OF REVIEW:This review highlights recent literature regarding online sexual offending, including the prevalence, characteristics, a brief review of recent typology literature, victimization risk factors, risk factors of being a "crossover" offender, rates and risk factors for recidivism, and a discussion of prevention efforts. RECENT FINDINGS:Online sexual offenders are overwhelmingly White men with relationship problems who were rarely previously arrested for felonies. They score lower on measures of antisocial behavior, compared to offenders who commit contact sexual offenses against children. Individuals who commit pornography offenses are at lower risk to commit contact offenses and their risk factors include having sexual interest in children and antisocial attitudes. Online offenders are different from contact sexual offenders and from offenders who commit both types of offenses. Recidivism in online noncontact offenders is difficult to assess due to the lack of empirically supported tools and the inappropriateness of using popular actuarial tools that lack norms on these offenders, but a new measure (CPORT) is being studied for use with this population.