Active Countermeasure Using EMI Honeypot against TEMPEST Eavesdropping in High-Speed Signalling

Current development in TEMPEST and other eavesdropping strategies becomes a critical threat to the information security. To enhance the countermeasures of eavesdropping the electromagnetic radiation leakage in high-speed signalling such as computer monitors and other high-speed peripherals, this paper proposed an active countermeasure solution by interfering the TEMPEST receiver with a honeypot radiation source. Instead of passive noise jamming methods, this honeypot strategy used the multi-carrier modulation to hide the leakage and transmit a pseudo high -speed signal blended with information baits which may lead the eavesdropper uncovered. This system was implemented on a software defined radio platform and verified to be a prospecting application in future information security.