The term « cybersex » refers to the use of the Internet for sexual purposes (pornography, webcams, dating). While moderate use of cybersex could have a positive effect on sexual life, a small fraction of these cyber-users could have difficulties to control their consumption with negative consequences. This phenomenon, whose understanding of the mechanisms still raises debates, seems to be influenced by various psychological factors, including avoidant attachment (avoidance of close emotional relationship) and depressed mood. Sexual desire, different types of motivations for using cybersex, and impulsivity could contribute, to some extent, to this phenomenon. Despite of their preliminary character, current available data lead us to recommend an integrated approach of the treatment of the persons facing these difficulties.