The article is devoted to the current problem of legal certainty of the initial stage of pre-trial proceedings of the Russian criminal process in the context of its digitalization. From this point of view, an analysis of the provisions of the Code of Criminal Procedure of the Russian Federation on the reception of a report of a crime has been carried out, and the problem of hiding crimes from registration is being considered. The author concludes that the use of digital technologies at the initial stage of pre-trial proceedings in domestic criminal proceedings, acting as a mechanism that will prevent the hiding of crimes from being recorded, also contributes to the realization of the principle of legal certainty. In order to implement the principle of legal certainty and solve the problem of digitalization of the initial stage of pre-trial proceedings in domestic criminal proceedings, taking into account the experience of the Republic of Kazakhstan, the main ways of modernizing the legal foundations of the initial stage of pre-trial proceedings have been formulated.