Cyberbullying affects many people who are part of the circle of influence of the bullier and the person or persons being bullied. First off, whether they like to admit it or not, cyberbullying affects the person who is actually doing the bullying. Deep inside, they probably know they are doing wrong and this can insidiously eat away at their psyche as they continue to perform these vile actions.
This type of bullying is an indication of character flaws and deep-seated issues that the person must deal with eventually. In essence, they cannot be happy, well-adjusted individuals if they are performing cyberbullying. This bullying is a manifestation of unresolved personal issues they have and are refusing to get help for from people they know in their circle (family, friends, and relatives) or professionals.
Secondly, cyberbullying affects those who know the bullier, if they know what this person is doing. These people may become upset at what this person is engaging in; they may try to influence the person to stop this behavior. This cyberbullying can harm a person's relationship with others close to them. On the other hand, a person's friend(s) may condone this cyberbullying that their friend is doing. Therefore, they may become involved in the same actions. This will ultimately affect them in a negative way, just as it is so doing to their friend.
Of course, the primary person affected is the person being bullied. They do not deserve this type of treatment and it affects them as they often become fearful and introverted. It affects their performance at work, at school if they are students and their family relationships because they are under increased social pressure. In turn, this affects their loved ones, such as family, relatives, and friends. It also affects their work on the job, school work, and the like. Therefore cyberbullying has wide ranging negative effects on a host of people.