An apparatus for testing, inspecting or screening an electrically powered device for modified or unmodified hardware, firmware or software modifications including Malware, Trojans, adware, improper versioning, worms, or virus and the like, includes an antenna positioned at a distance from the electrically powered device and a signal receiver or sensor for examining a signal from the electrically powered device. The receiver or sensor collects unintended RF energy components emitted by the electrically powered device and includes one or more processors and executable instructions that perform analysis in a response to the acquired signal input while the electrically powered device is active or powered. The characteristics of the collected RF energy may be compared with RF energy characteristics of an unmodified device. The comparison determines one of a modified, unmodified or score of certainty of modified condition of the electrically powered device.