Opportunities, perceptions and capabilities are a trident that explains bullying, aggression and violence on the Internet and social networks through technological devices. A review of the theories, concepts and empirical findings related to the trident shows the prevalence of three hypotheses: 1) the perception of usefulness is the predominant factor in the explanation of asymmetric relationships between users, 2) capabilities are the essential factor to understand the differences between aggressors and victims in a virtual scenario and 3) technology itself clarifies the trend of compatibility between users' devices and lifestyles. Since the three hypotheses are based on theories, models and concepts that center the problem on the individual, it is necessary to contrast this trend with the literature review. This exercise will make it possible to anticipate the axes of debate and the scenarios towards which ICT users are moving.