Detecting Hardware Trojans on Inter-IC Serial Data Links Through Capacitance Sensors

Threats that cause electromagnetic information leakage by inserting Hardware Trojans (HT) into the signal traces around components on the printed circuit board have been reported. This threat occurs not only at the manufacturing stage but also in transit and the field, unlike HTs against ICs. This paper proposes the detection and monitoring method for the HT insertion on the inter-IC serial data link, which transmits sensitive information among the above-mentioned threats. The implementation uses only a microcontroller and does not require external analog components.