See also:

• Business: Business Services: Fire and Security: Security: Investigation: Investigators  (530)
• Business: Business Services: Fire and Security: Security: Surveillance  (292)
• Computers: Hacking: HERF, EMP, Tempest  (3)
• Computers: Security: Consultants  (542)

• Advanced Countermeasures - Offers services in locating electronic eavesdropping devices through electronic detection and manual inspection. Serves the Midwestern US.
• AEGIS Defence Services Ltd - 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.
• CPT International Ltd. - Covert surveillance training, countermeasures, and technical security as well as exhibition and corporate event security.
• 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.
• 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.
• Professional Development TSCM Group Inc. - Offers professional level services and advanced training for government, military, law enforcement, corporate, and the financial sector.
• 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.
• 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.