Abstract This study aimed to evaluate the short-term effects of the social networking safety promotion and cyberbullying prevention presentation of the Arizona attorney general's guided by the extended parallel process model (EPPM). A quasi-experimental (a pre-posttest) was used with two groups with random assignment to intervention. A total of 389 adolescents in seventh, eighth, and ninth grades at two public middle schools in Muscat city were involved in the study procedures and randomly divided into two groups (the experimental group (n = 186) and the waiting list group (n = 203). The risk behavior diagnostic scale, behavioral intention and attitudes scale, coping strategies with cyberbullying scale, and self-protection behavior intentions were used. Five separate presentations (each presentation was 60 min, one presentation per week) were introduced to the adolescents in the experimental group. The results supported the efficacy of the intervention in changing adolescents' attitudes and behavioral intentions against cyberbullying and promoting their security and safety during their use of social networks. Also, the intervention has a significant effect on the four EPPM components (susceptibility, severity, self-efficacy, and self-efficacy responses) and the participants learned coping skills to deal with potential cyberbullying incidents).