Cyber-bullying
the use of electronic communication to bully a person, typically by sending messages of an intimidating or threatening nature.
Online Grooming
The aim of befriending and establishing an emotional connection with a child, in order to lower the child's inhibitions in preparation for sexual activity with the child".
Sexting
Sending (someone) sexually explicit photographs or messages via mobile phone.
Social Networking
A website/application to interact & communicate with other users, or to find people with similar interests.