Abstract: Disclosed herein are systems and methods for providing a trained model to a computing device of a user. In one aspect, an exemplary method comprises, receiving, by a model transmitter, registration information from the computing device of the user comprising a trained model of the user's behavior, wherein the model is constructed using software provided by a service, storing, by the model transmitter, the received registration information in a database of behavior models, and during a repeat visit, by the user, to the service, updating the trained model of the user's behavior and transmitting the updated trained model to the service, wherein the updated trained model differs from a previously sent model of the user's behavior by no more than is allowed for unambiguous identification of the user on the service.