That's not feasible. What else you got?
Nothing. And you? Any arguments how cyberbullying could be stopped?
It depends on the situation. Usually, but not always, it starts irl. Social media is an extension. It stands to reason that is where you stop it. No?
First things first, the kid needs to be able to come forward. If they firmly believe that nobody cares, nothing will be done or it is after a sexual assault then they may not come forward. Parents need to pry--go through the texts. Pay attention to what they are doing online. Know the friends. Be involved.
Secondly, and the big push currently, is that since most of it originates in school then they operate as the mediator in these situations. Doesn't mean that I agree with that and it does not guarantee that anything will be done. In my own personal experience, which is clearly not true for all (and did not extend to social media), I went to the school because they had/have a zero tolerance policy and it was taking place in the school. I spoke with the principal. I said you won't protect him and you will not allow him to protect himself. He said, "What do you want me to do about it?" There was a rule change after that and parents needed to go to the teacher. The teacher said that if it happened again they would let me know where to locate the parents.
I have found success in dealing with the parents directly. They cannot stop what they do not know. Sometimes the apple doesn't fall too far from the tree. It's a crap shoot and it is much easier to deal with when the kid is younger.
I spent an inordinate amount of time trying to keep my kid from letting loose because he was/is much bigger than kids his age. He had no clue how much damage that he could do. Adults that maintained the stance of it's just a normal part of life are now singing a whole different tune. He won't stop until he hits about 6'4" and he is approaching that.
Go to the police. Harassment is harassment.
Move.