A method for assessing the resistance of a security module against an attempt to divert a communication pipe between a gate of this security module and a gate of a near-field communication router present in a telecommunication device to which the security module is intended to be connected, including the steps of: connecting the security module to a near-field communication router emulator; having the emulator send at least one command to the security module, this command simulating the fact that the pipe used is not connected to a near-field communication gate; and determining whether the security module accepts the commands.