Systems and methods for detection of undesired/unwanted electronic devices are provided. According to one embodiment, a spectral signature of an electronic device is received by a sensing device configured to detect presence of an unwanted electronic device in proximity to an electronic device environment. The received spectral signature is matched against multiple stored spectral signatures of one or more electronic devices associated with the electronic device environment. When the received spectral signature does not match any of the multiple stored spectral signatures, then the electronic device is classified as an unwanted electronic device.