Cyberbullying impacts on the wellbeing, schooling, family and peer relationships of many young people. The current study of 548 young Australians revealed that cyberbullying is a group phenomenon most prevalent during the transitional ages between primary and secondary school. It takes on many forms and shows an overlap in roles between "bully" and "victim". Despite the serious emotional impacts of cyberbullying, over a quarter of victims did not seek support from others, which highlights the need for more information and support to be given to young people to encourage them to speak out. (Contains 1 figure and 3 tables.)