Manipulation of Analog Sensors through Electromagnetic Interference Attacks

Analog sensors connect the physical world and the cyber world. They convert physical quantities into corresponding analog electrical quantities, which are then further digitized and read by a controller. Electromagnetic interference (EMI) attacks will trigger the electromagnetic susceptibility (EMS) of analog sensors, resulting in false output values. In two experimental cases, we arbitrarily modify the sensor output by adjusting the frequency and level of the EMI signal. Results show that the analog sensor output can be effectively manipulated through EMI attacks.