Method of detecting unauthorized devices installed on electrical interfaces of vehicles

This invention relates to cybersecurity enforcement in vehicle control systems, more specifically, to the protection of electrical interfaces as components of such control systems. The method of detecting unauthorized devices installed on electrical interfaces of vehicles comprises measuring the impedances (the reactive and the active resistances) of the electrical interface at the initial moment of time and subsequently. The measurement of the active component of the electrical interface resistance comprises the measurement of the current and voltage of the devices connected to the electrical interface followed by the calculation of the total resistance of all the devices. The measurement of the reactive component of the electrical interface resistance comprises the measurement of the capacitance component of the electrical interface resistance by the impedance spectroscopy method. The technical result of the invention disclosed herein is the prevention and elimination of the threat option, more specifically, the installation of unauthorized devices on electrical interfaces.