FISINT or foreign instrumentation signals intelligence

A subcategory of SIGINT, COMINT, and MASINT that consists of technical information and intelligence derived from the interception of foreign electromagnetic emissions associated with the testing and operational deployment of non-United States aerospace, surface, and subsurface systems.

Examples:

  • Analysis of machine to machine language
  • Remote access and control transmissions, such as from remote keyless systems, wireless doorbells, and wireless traffic light control systems

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