The standard online predators definition is: any person, male or female, using the Internet for the express purpose of targeting a minor to perform non-consensual sex acts. They work through anonymity and manipulation. They use the very things that make your child a child, against them. They use emotional vulnerability and the child’s needs to have their emotional point of view validated.
Online predators use the searchable profiles of today’s social media and chat sites to pick and stalk their targets. Children are often not aware that even the most innocent looking photo of a child in their sports jersey can help a stalker target them. Profiles give the predator ammunition and information in his search for a suitable target. (taken from nobullying.com )