1. A method to detect a malware at a field programmable gate array (FPGA) through voltage measurements of the FPGA, the method comprising: initiating a scan of the FPGA for the malware; measuring voltages in distinct areas that include at least one from a set of: an existing sensor within the FPGA or a new sensor positioned adjacent to the FPGA; creating a power map from the voltages; and executing the scan by comparing the power map to an expected activity information associated with the FPGA.