Bullies are no longer content to taunt their victims in the playground but are turning to cyberspace, according to Canadian researchers.

They are using e-mail, text messaging and social networking sites in new forms of victimization.

Cyber bullies are even forcing their girlfriends to undress in front of webcams and then sharing the images with others online.

“They’re pressuring each other. This is particularly (true) for girls to send pictures of themselves with their tops off,” said Professor Faye Mishna, of the University of Toronto, who has been researching the cyber abuse of children.

“Girls might send it to their boyfriend and she is pressured to do it thinking he’s just going to see it. So she gives in and the next thing you know it’s all over (the place).”