The phenomenon of anonymous self-disclosure on social media is currently increasingly found, one of which is on social media Twitter. The @collegemenfess Twitter account is an autobase account that is widely used as a medium for student self-disclosure, especially about college issues and campus life.The purpose of this study was to determine the form of areas and motives of self-disclosure and cyber culture formed on the autobase @collegemenfess account. The study used descriptive qualitative methods. The Data in this study were obtained through interviews with 5 informants and observations on communication activities in cyberspace Twitter account @collegemenfess. The results showed that there were two forms of johari Window area that occurred in the self-disclosure in the @collegemenfess account, which occurred in the open area and the blind area. Furthermore, it is known that there are five motives for users to do self-disclosure, the @collegemenfess account is anonymous, users are afraid to tell stories with others directly, to share information and experiences, to overcome problems and get a better understanding, and motivation and actualization. The study also found five levels of cyber culture formed, namely the first level of media space, where the @collegemenfess account uses Twitter as a medium. Second, the level of media documents, where the media documents in this account are the access, interaction, activities and responses from users. Third, the media object level, where the @collegemenfess account is used as a place to discuss such as exchanging stories and expressing yourself. Finally, the experience level, which is the reason the account owner created this account to provide a communication platform for students and user communication culture using an anonymous identity.