A few decades ago, adolescents wrote about their intimacy in their diary, which was their secret place. Nowadays, however, it has been replaced by the social networks (SN), on-line walls and biographies, where, in addition to displaying their images, they make intimate confessions that are publicly accessible on the web. It is obvious that a new opening has emerged to a horizon of knowledge and beneficial experiences through Internet, and that this will develop progressively in the future. However, the risks of these new technologies are a cause of much concern (Livingstone, 2008). Among the more dangerous risks is bullying or loss of intimacy, access to pornographic or violent content, the desire to stand out and display a false personality, the increase of narcissisism, cyberbullying, etc.  (Estévez, Bayón, De la Cruz, & Fernández-Liria, 2009). Some authors indicate (Mascheroni, Ponte, Garmendia, Garitaonandia, & Murru, 2010) that the risks are concentrated in two areas: those related to sexual behaviors and to aggressive behaviors, which have led to a new form of aggression called sexting-bullying. Adolescents who share their profile with their peers are sometimes imprudent about the content they hang on the web, the photos they publish and their textings Maganto, Peris, Echarte, & Ugalde (2013, in press). Adolescent girls expose themselves to and enter into contact with more risky online situations than boys (Stamoulis, 2009), and it has been shown that blog users who hang provocative photographs or sexual comments are at greater risk of receiving online sexual insinuations and bullying (Michell, Wolak, & Finkelhor, 2008), because they publish personal information and communicate with strangers, which involves a high risk. In their investigation, Kholos and Chirlders (2011) found that two thirds of the women send explicitly sexual texts or photos of themselves through mobile phones or e-mail, whereas only one half of the men do so. This practice can cause serious problems, ranging from the loss of privacy to victimization and humiliation, exposing oneself to the risk of suffering sexting-bullying or some other type of harassment, violence or offense in the SN (Garaigordobil, 2011).

Taking this review into account, the goals of the present investigation are: a) to analyze in adolescents the practice of sexting-bullying in the SN and to confirm differences as a function of gender; b) to investigate the reactions of the victims of the practice of sexting-bullying; and c) to confirm the relation between the personality variables of the bully and the psychological variables of the victim.

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