Evaluation of an Implementation of a Method for Detecting Unauthorized Device Connected to an In-Vehicle Network with many ECUs

Abstract

We have proposed a detection technique using Time Domain Reflectometry (which is an instrument to determine the characteristics of electrical lines) to counter threats of physically unauthorized device connection to an in-vehicle network. In this paper, the proposed method was implemented on an in-vehicle evaluation board and evaluated, and has achieved detection success rate of 94.4% even when four or five ECUs were connected.