Aegis Intelligence - Security consultants specialising in technical surveillance countermeasures, information security and corporate investigations. Based in Scotland.
Computer Immune Systems - Exploration of how to apply ideas from immunology to computer security problems.
Executive World Services - Assistance to business and government in the detection and nullification of electronic information theft and eavesdropping systems. Braselton, Georgia.
Granite Island Group - Telecommunications security, counterintelligence, and security consulting. Based in Massachusetts.
Technical Security Consultants Inc. - Services in the areas of electronic countermeasures and protection of proprietary information, training and seminars. Carrollton, Georgia.
TSCM - Debugging and eavesdropping detection training and services. Based in South Africa.
TSCM Technical Services - Security consulting service dedicated to the detection of eavesdropping and electronic surveillance.
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