Technical Surveillance Countermeasures (TSCM), widely known as electronic bug sweeping, involves the detailed physical and technical inspection of the working environment, or home, to locate and neutralise covert surveillance devices.

Not only will a Technical Surveillance Countermeasures survey detect, locate and identify any illicit bugging devices, it can also identify additional areas where an organisation may be losing information other than through illicit eavesdropping devices such as through IT, Bluetooth, un-encrypted systems and broadcasting equipment.