Eavesdropping devices are tools used to covertly capture conversations, images or data, including covert listening devices, hidden cameras and methods of intercepting communications.
This page describes categories of threat at a general level, to aid understanding. It is not a how-to, and the detail that matters in any real situation belongs with a professional.
Covert listening devices, often called bugs, capture audio and may transmit it or store it for later retrieval. Hidden cameras capture images and can be concealed within everyday objects. Communications can be intercepted in transit. And ordinary devices, phones, laptops and connected equipment, can themselves be turned into surveillance tools if compromised.
Devices may transmit only intermittently, may be dormant until activated, may operate outside the frequency ranges that consumer detectors cover, and may be hidden inside legitimate equipment where a casual search will not find them. This is why professional TSCM relies on methodology and calibrated equipment rather than a single detector.
Periodic professional inspection of genuinely sensitive spaces, disciplined control over what devices enter those spaces, and good physical security all reduce exposure. Awareness matters too: most successful surveillance exploits routine and assumption rather than technical brilliance.
Detection of surveillance devices through professional TSCM is delivered by Jayde Consulting.
Jayde Consulting →