Technical Surveillance Counter-measures - Technology Used

Technology Used

Technology most commonly used for a bug sweep includes but is not limited to:

  • Multimeters for general measurements of power supplies and device components.
  • Time-domain reflectometer (TDR) for testing the integrity of copper telephone lines and other communication cables.
  • Frequency scanner with a range of antennas and filters for checking the electromagnetic spectrum for signals that should not be there.
  • Oscilloscope for visualisation of signals.
  • Spectrum analyzer and vector signal analyzer for more advanced analysis of threatening and non threatening RF signals.
  • Nonlinear junction detector (NLJD) for detection of components associated with hidden eavesdropping devices.
  • Portable x-ray machine for checking the inside of objects and walls.
  • Computer security devices and tools for computer-related threats.
  • Tools for manual disassembling of objects and walls in order to visually check their content. This is the most important, most laborious, least glamorous and hence most neglected part of a check.
  • Thermal imaging helps find hot spots and areas higher in temperature than the ambient area temperature. Finds heat generated from active electronic components.
  • Flashlight one of the most important tools to have beside a ladder for providing a competent sweep.

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