Cyberbullying

What is cyberbullying, exactly?

"Cyberbullying" is when a child, preteen or teen is tormented, threatened, harassed, humiliated, embarrassed, or otherwise targeted by any other child(teen or preteen) using the internet, interactive and digital technologies or mobile phones. Once adults become involved it's simply called cyber-harassment. 

Why it's related to ethics?

"Ethic is a part of philosophy that includes the study of morality , virtue happiness and good living. Devoted to the study of human actions."

So it's simple, when we make cyberbulling, we are not considering virtue and values, so we are making an "un-ethical" action.