TSCM stands for Technical Surveillance Counter Measures. This term refers to the process of detecting, geolocating and mitigating electronic eavesdropping devices, also known as bugs, that may be used to spy on individuals or organizations. TSCM experts use specialized equipment (electronic sweeps as well continuous spectrum building monitoring systems) and techniques to sweep secure, sensitive or no-go cell / mobile zones) for hidden listening, recording or receiver devices and other surveillance equipment.
Basic TSCM involves physical searches and electronic sweeps.
Sophisticated TSCM, of the kind employed in embassies, situation rooms, quantum labs and SCIFs for example, requires continuous spectrum building monitoring systems that perform 24/7/365 sweeps, use detectors, automation and geolocation to guard against unauthorized surveillance, counter espionage and cyber-attack threats.