A method for securing an entry in a user database, the method being performed in a management server in charge of the database and comprising the steps of: receiving a network identifier of a user terminal, identifying the user terminal in a telecommunications network; transmitting to a network platform an operator of the telecommunications network a user confirmation request, the request comprising the network identifier of the user terminal; upon receiving a user confirmation from the network platform, creating an entry by the terminal user in the user database, the entry comprising the network identifier of the user terminal.