A literature search was conducted using PubMed and PsycINFO to locate cyberbullying research that was published during the last 4 years. In this narrative review, cyberbullying research is briefl y summarized and critiqued. The review is focused on the varying defi nitions and characteristics of cyberbullies, victims and bystanders. Highly variable prevalence rates have been reported for cyberbullies, victims and bystanders as a function of age, gender, country, size of the social network and socioeconomic factors. In addition, the effects of cyberbullying are reviewed including the frequent suicide attempts along with risk factors/predictors of cyberbullying which include previous cyberbullying, excessive internet use and lack of empathy, anger, narcissism and authoritarian/permissive parenting. To refl ect the recent literature, special attention is given to the studies on victims of bullying. Research on cyberbullies and on prevention/intervention programs for bullying is extremely limited despite the increasing prevalence of bullying and the rapidly accumulating literature. Methodological limitations include the primary focus on the prevalence of bullying and on the victims of bullying. Longitudinal, multivariate studies are needed to identify profi les on risk factors for bullying that can inform prevention programs.