The dissertation analyzes the system of civil liability provided for in the General Law for the Protection of Personal Data (LGPD). In the scenario of new technologies in the Information Society, data protection is of enormous relevance and requires specific protection and privacy and informational self-determination. The object of the system developed by the LGPD was to determine rules and limits to determine how personal data should be treated to prevent and prevent damage. With the objective of prevention, in addition to reimbursement, the law has not expressly implied the nature of the civil liability of agents of personal data processing, whether subjective or objective. This paper aims to answer the following question: how are the dynamics of civil liability articulated in the General Law for the Protection of Personal Data? The hypothesis of this study considers that understanding the norms related to civil liability in the General Law on the Protection of Personal Data does not necessarily pass through the choice between traditional types of civil liability, whether subjective or objective. It considered, on the contrary, that the LGPD legislature created a new system of accountability, of a preventive-precautionary type, intending to guarantee the privacy of personal data, which could not even be fully realized in the traditional profile of compensation for damage. The preventive function of civil liability has assumed fundamental importance in that damages must be avoided to meet the constitutional objective of social solidarity and achieve existential values. This analysis has an eminently comprehensive character with a qualitative focus, considering that part of the constitutionalized interpretation of civil liability before updating its foundation as an essential instance for the protection and promotion of the fundamental rights of the human person.