TSCM (Bug Sweeping) Techniques
RF Spectrum Analysis
Radio frequency (RF) analysis entails detecting, characterizing, and locating potentially hostile transmissions—such as those emitted by covert room bugs and GPS tracking devices. Effective RF spectrum analysis requires expertise in spectrum allocation, signal propagation, modulation schemes, signal masking techniques, and direction-finding methodologies.
Wi-Fi & Bluetooth Analysis
Eavesdroppers may exploit legitimate or rogue Wi‑Fi networks to exfiltrate data, so auditing wireless networks in sensitive environments is essential. Identified suspicious networks or client devices should be precisely located and subjected to further investigation.
Wired System Analysis
Ethernet, telephone, HVAC, and alarm system wiring can provide channels through which information may leave a secured area. All cabling should be traced and electronically inspected to verify it is not being exploited for unauthorized data exfiltration.
Ultrasonic Inspection
Ultrasonic sound can be used to covertly transmit information over short distances. Some eavesdropping devices also emit unintended ultrasonic noise, which can make them easier to detect.
Business and residential telephone systems are susceptible to a variety of eavesdropping methods. We perform electronic testing of telephone instruments, trace and analyze wiring, and inspect on-site distribution frames and demarcation points for unauthorized taps.
Telephone System Analysis
Clients worried about electronic espionage often overlook a more immediate risk: acoustic leakage. Before addressing more sophisticated threats, it is prudent to determine whether conversations can be overheard—sometimes with the assistance of specialized microphones. A range of tools is available to detect and mitigate this vulnerability.
Acoustic Leakage Analysis
Hidden Camera Detection
Covert cameras can be identified using radio-frequency analysis, thermal imaging, and specialized detection tools that locate semiconductor components and lens reflections.
Equipment Auditing
A comprehensive equipment audit documents every transmitting device in a workspace and establishes the baseline for future inspections. With this baseline in place, it becomes straightforward to detect any items introduced later that could conceal eavesdropping devices.
Thermal Imagery Inspection
Many eavesdropping devices emit heat. Thermal imaging inspections enable us to detect anomalous heat signatures that may indicate the presence of such devices.
Infrared & Laser Detection
Some eavesdropping devices transmit audio or data using light rather than radio frequencies. These optical devices require a clear line of sight and can be detected only through a physical inspection or with specialized detection equipment.