Cyberbullying is a relatively new type of harassment and it is very complex to establish a mechanism to prevent or predict it. I think that on this website you can find some of the information you are looking for.
Victims of cyberbullying may experience many of the same effects as children who are bullied in person, such as a drop in grades, low self-esteem, a change in interests, or depression. However cyberbullying can seem more extreme to its victims because of several factors:
It occurs in the child's home. Being bullied at home can take away the place children feel most safe.
It can be harsher. Often kids say things online that they wouldn't say in person, mainly because they can't see the other person's reaction.
It can be far reaching. Kids can send emails making fun of someone to their entire class or school with a few clicks, or post them on a website for the whole world to see.
It can be anonymous. Cyberbullies often hide behind screen names and email addresses that don't identify who they are. Not knowing who is responsible for bullying messages can add to a victim's insecurity.
It may seem inescapable. It may seem easy to get away from a cyberbully by just getting offline, but for some kids not going online takes away one of the major places they socialize.
Cyberbullying can be a complicated issue, especially for adults who are not as familiar with using the Internet, instant messenger, or chat rooms as kids. But like more typical forms of bullying, it can be prevented when kids know how to protect themselves and parents are available to help.
I may add on one more perspective - cyberbullying definition
Due to the constant changes in electronic communication technologies, it is difficult for experts to create a shared definition of cyberbullying that is suitable for different authorities to use to establish laws and prosecute perpetrators.
I think you can benefit well by using the classical bullying definitions (repetition, intention to cause harm, imbalance of power). From these aspects, you could target 'core' associated variables, such as co-victimization with off-line bullying, internalizing and externalizing disorders, internet use and internet monitoring, age and gender. There are plenty of materials easily accessible via Google Scholar. Best of luck