Using Power Clues to Hack IoT Devices: The power side channel provides for instruction-level disassembly

The field of consumer electronics (CE) has gone digital, inheriting all the security problems of the digital world in the process. The Internet of Things (IoT) class of CE devices is still in a very early adoption phase. Physical side channels are a bigger vulnerability for this class of devices than traditional security threats that exploit protocol, algorithm, or program weaknesses. Interestingly, the assembly-level program executing within a device can be reconstructed only through power sidechannel observations. This instruction-level disassembly is an emerging power side-channel threat.