An analysis of over 70 studies has found that children who have overprotective parents were more likely to be bullied by their peers.

“Although parental involvement, support and high supervision decrease the chances of children being involved in bullying, for victims - overprotection increased this risk. Children need support but some parents try to buffer their children from all negative experiences. In the process, they prevent their children from learning ways of dealing with bullies and make them more vulnerable”, Professor Wolke said.
Source-Medindia