| Advanced Countermeasures: Offers services in locating electronic eavesdropping devices through electronic detection and manual inspection. Serves the Midwestern US. |
| Aegis Intelligence: Security consultants specialising in technical surveillance countermeasures, information security and corporate investigations. Based in Scotland. |
| Artemis Security Solutions Ltd: Offer counter-surveillance sweep and inspection services. Details of services, equipment used and company background. Based in London, United Kingdom. |
| Audio Visual Security Ltd.: CCTV products and equipment. |
| Audiotel International: Manufacturer of counter surveillance electronics including harmonic receivers, junction detectors, bug and mobile phone detectors and cable checkers. Located in Corby, United Kingdom. |
| Communication Security Inc.: Technical surveillance countermeasure services. Bay City, Texas. |
| EED Co, Inc: Offer counter-surveillance sweep services. Tools used, credentials and contact details. Based in New York, USA. |
| 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. |
| International Procurement Services Ltd: Electronic counter measures sweeps in the United Kingdom. |
| International Procurement Services Ltd.: Features security equipment for government and corporate users. Specializes in electronic counter measures and team training. UK based. |
| International Protective Group: Offer counter-surveillance sweep services and training. Information on approach and results of previous investigations. Mississauga, Ontario, Canada. |
| J.A. Lasorsa & Associates: Provides debugging, anti-wiretapping, and audio countermeasure services, security services and consulting, confidential investigations, executive protection, threat and vulnerabiltiy assessments, workplace and school violence consulting, and computer network security. |
| Murray Associates: Eavesdropping detection and counterespionage consulting services. Includes espionage newsletter archive and downloadable guidance on security and bug detection. Based in Oldwick, New Jersey, USA. |
| Research Electronics International: Offer training in how to conduct counter-surveillance investigations. Also design and manufacture electronic countermeasure equipment. Based in Algood, Tennessee, USA. |
| Spy Nexus Inc.: Bug detectors, counter-surveillance equipment, telephone tap and phone wiretap detection devices, and body wire detectors. |
| Technical Security Consultants Inc.: Services in the areas of electronic countermeasures and protection of proprietary information, training and seminars. Carrollton, Georgia. |
| The National Cybercrime Training Partnership: Training law enforcement in electronic and high-technology crime. |
| 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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