Company lists · Data refreshed November 2026
Top 25 Counter surveillance companies worldwide
RevenueBase identified 674 company matches for counter surveillance companies worldwide as of November 2026 and tracks 9,651 professional contacts across them, including 665 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for counter surveillance companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for counter surveillance companies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest counter surveillance companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,263 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 585 contacts → | ||||
Exact match “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 224 contacts → | ||||
Exact match “T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 152 contacts → | ||||
Exact match “Our goal is to create and maintain safe environments by providing threat analysis, protection, investigations, consulting, intelligence and security training services everywhere…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 112 contacts → | ||||
Exact match “A company specialized in Property Surveillance, Electronic Monitoring, Risk Analysis, Security Projects, and Facilities Services for a wide range of institutions, commercial…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 89 contacts → | ||||
Exact match “Black Box Security Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 70 contacts → | ||||
Exact match “Ops Tech Alliance (OTA) helps government organizations solve complex national security challenges by combining operational experience, technology, intelligence, cybersecurity, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 63 contacts → | ||||
Exact match “Advantage SCI is a professional security and counterintelligence firm, headquartered in Alexandria, Virginia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 52 contacts → | ||||
Exact match “Justicia Investigations provides a range of professional investigative services including: Forensic investigations | Facts and truth discovery and verification (credential…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 45 contacts → | ||||
Exact match “SOS's mission is to ensure that its clients, whether government or commercial concentrate on their primary objectives, leaving SOS to deal with matters related to security and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 39 contacts → | ||||
Exact match “Contrack Security Services is a sister company to Contrack Facility Management.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 35 contacts → | ||||
Exact match “For over 40 years, Research Electronics International (REI) has focused on protecting corporate information by designing and manufacturing technical security equipment to protect…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 32 contacts → | ||||
Exact match “Brownsword Group, incorporating Mike India 5, provide professional investigation, surveillance and counter surveillance services to the Insurance and Corporate sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 30 contacts → | ||||
Exact match “INA offers premier investigative and security services to government, private corporations and individuals.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 30 contacts → | ||||
Exact match “We are a veteran owned, Northwest based, global security consultancy offering Security Consulting and Executive Protection services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 29 contacts → | ||||
Exact match “Référence de choix en matière d’investigation et de protection, Haute Protection la Capitale offre une gamme étendue de solutions spécialisées à des clients provenant de toutes…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 25 contacts → | ||||
Exact match “Air Support Tactical Security Limited is an approved Protective Service Agency in Trinidad and Tobago.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 24 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 24 contacts → | ||||
Exact match “Our Chartered Security Professionals seamlessly integrate discreet and effective security into lifestyles and organisations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 23 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 21 contacts → | ||||
Exact match “XG Consultants Group, founded by a former FBI Supervisory Special Agent, is a global private investigative firm specializing in background screenings, social media research…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 21 contacts → | ||||
Exact match “VESTAGuard Security is een jong & dynamisch bewakingsbedrijf dat begrippen als veiligheidsgarantie, bescherming, zekerheid en vertrouwen hoog in het vaandel draagt.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 21 contacts → | ||||
Exact match “Groupe Trak est une firme spécialisée dans le secteur de la sécurité corporative qui offre une gamme complète de services professionnels et personnalisés : SERVICES RH…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 20 contacts → | ||||
Exact match “With over 200 years of combined experience across law enforcement, the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 20 contacts → | ||||
Exact match “On Watch LLC brings together over 200 years of US military, federal, state, and local law enforcement experience.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “counter surveillance companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 674 counter surveillance companies worldwide
See the full list, filter by size, metro and specialty, and access 665 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Counter surveillance companies worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for counter surveillance companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “counter surveillance companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 665 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Counter surveillance companies by location
2 lists · largest firstEvery Counter surveillance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “counter surveillance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many counter surveillance companies are there worldwide?
RevenueBase identified 674 company matches for counter surveillance companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
U.S. Security Associates, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most counter surveillance companies?
The United States leads with 245 companies, followed by the United Kingdom (65). Every counter surveillance companies list by country and city is linked on this page.
Which city has the most counter surveillance companies?
London leads with 30 company records, followed by Los Angeles (10) and Milan (8).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 665 professional contacts with verified work emails tracked across these 674 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 674 counter surveillance companies worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 counter surveillance companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 674 matching company records for counter surveillance companies worldwide, with 9,651 tracked contacts and 665 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 counter surveillance companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Security Alliancesecurityalliancegroup.comHQ: Miami, FL, United StatesReported employees: 1,001-5,000 | Miami, FL, United States | 1,001-5,000 | Exact match | 585 contacts → |
“Security Alliance is a highly experienced provider of security solutions for private and business environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  T&m Usa, LLCtmusallc.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 224 contacts → |
“T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  At-Risk International, INCat-riskinternational.comHQ: Reston, VA, United StatesReported employees: 51-200 | Reston, VA, United States | 51-200 | Exact match | 152 contacts → |
“Our goal is to create and maintain safe environments by providing threat analysis, protection, investigations, consulting, intelligence and security training services everywhere…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Grupo Hawkgrupohawk.com.brHQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 112 contacts → |
“A company specialized in Property Surveillance, Electronic Monitoring, Risk Analysis, Security Projects, and Facilities Services for a wide range of institutions, commercial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Black BOX Security, INCbbxsecurity.comHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 89 contacts → |
“Black Box Security Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  OPS Tech Allianceops-tech-alliance.comHQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 70 contacts → |
“Ops Tech Alliance (OTA) helps government organizations solve complex national security challenges by combining operational experience, technology, intelligence, cybersecurity, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Advantage Sci, LLCadvantagesci.comHQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 63 contacts → |
“Advantage SCI is a professional security and counterintelligence firm, headquartered in Alexandria, Virginia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Justicia Investigationsjusticia.co.zaHQ: Durban, South AfricaReported employees: 11-50 | Durban, South Africa | 11-50 | Exact match | 52 contacts → |
“Justicia Investigations provides a range of professional investigative services including: Forensic investigations | Facts and truth discovery and verification (credential…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  SOS Pakistansospakistan.comHQ: Multan, PakistanReported employees: 501-1,000 | Multan, Pakistan | 501-1,000 | Exact match | 45 contacts → |
“SOS's mission is to ensure that its clients, whether government or commercial concentrate on their primary objectives, leaving SOS to deal with matters related to security and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Contrack Security Services - CSScontrackss.comHQ: Cairo, EgyptReported employees: 1,001-5,000 | Cairo, Egypt | 1,001-5,000 | Exact match | 39 contacts → |
“Contrack Security Services is a sister company to Contrack Facility Management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Research Electronics Internationalreiusa.netHQ: Cookeville, TN, United StatesReported employees: 51-200 | Cookeville, TN, United States | 51-200 | Exact match | 35 contacts → |
“For over 40 years, Research Electronics International (REI) has focused on protecting corporate information by designing and manufacturing technical security equipment to protect…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Brownsword Groupbrownsword.com HQ: United KingdomReported employees: 51-200 | United Kingdom | 51-200 | Exact match | 32 contacts → |
“Brownsword Group, incorporating Mike India 5, provide professional investigation, surveillance and counter surveillance services to the Insurance and Corporate sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Information Network Associates, INCina-inc.comHQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 30 contacts → |
“INA offers premier investigative and security services to government, private corporations and individuals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Foresight Security Consultingforesight-sc.comHQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 30 contacts → |
“We are a veteran owned, Northwest based, global security consultancy offering Security Consulting and Executive Protection services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Haute Protection LA Capitalehauteprotection.caHQ: Québec, QC, CanadaReported employees: 51-200 | Québec, QC, Canada | 51-200 | Exact match | 29 contacts → |
“Référence de choix en matière d’investigation et de protection, Haute Protection la Capitale offre une gamme étendue de solutions spécialisées à des clients provenant de toutes…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  AIR Support Tactical Security Limitedairsupport-tactical.comHQ: Valsayn, United StatesReported employees: 11-50 | Valsayn, United States | 11-50 | Exact match | 25 contacts → |
“Air Support Tactical Security Limited is an approved Protective Service Agency in Trinidad and Tobago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Olgoonik Enterprises LLColgoonikglobalsecurity.net HQ: Anchorage, AK, United StatesReported employees: 1-10 | Anchorage, AK, United States | 1-10 | Exact match | 24 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  Kiris Groupkirisgroup.comHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Our Chartered Security Professionals seamlessly integrate discreet and effective security into lifestyles and organisations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Olgoonik Global Security, LLColgoonikglobalsecurity.com HQ: Anchorage, AK, United StatesReported employees: 51-200 | Anchorage, AK, United States | 51-200 | Exact match | 23 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  XG Consultants Groupxgconsultantsgroup.comHQ: New York, CT, United StatesReported employees: 11-50 | New York, CT, United States | 11-50 | Exact match | 21 contacts → |
“XG Consultants Group, founded by a former FBI Supervisory Special Agent, is a global private investigative firm specializing in background screenings, social media research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Vestaguard Securityvestaguard.beHQ: Izegem, BelgiumReported employees: 51-200 | Izegem, Belgium | 51-200 | Exact match | 21 contacts → |
“VESTAGuard Security is een jong & dynamisch bewakingsbedrijf dat begrippen als veiligheidsgarantie, bescherming, zekerheid en vertrouwen hoog in het vaandel draagt.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Groupe Trakgroupetrak.com HQ: Saint-Hubert, QC, CanadaReported employees: 51-200 | Saint-Hubert, QC, Canada | 51-200 | Exact match | 21 contacts → |
“Groupe Trak est une firme spécialisée dans le secteur de la sécurité corporative qui offre une gamme complète de services professionnels et personnalisés : SERVICES RH…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  360 Security Services360security.servicesHQ: Minneapolis, WI, United StatesReported employees: 11-50 | Minneapolis, WI, United States | 11-50 | Exact match | 20 contacts → |
“With over 200 years of combined experience across law enforcement, the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  On Watch LLConwatchusa.comHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 20 contacts → |
“On Watch LLC brings together over 200 years of US military, federal, state, and local law enforcement experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 674 company matches
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Counter surveillance companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
665 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 674 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Counter surveillance companies by location
2 lists · largest firstEvery Counter surveillance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for counter surveillance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many counter surveillance companies did RevenueBase find worldwide?
The saved snapshot records 674 matching company records, 9,651 tracked contacts and 665 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 counter surveillance companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/counter-surveillance-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 counter surveillance companies worldwide
RevenueBase records 674 matching company records for counter surveillance companies worldwide, with 9,651 tracked contacts and 665 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 counter surveillance companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Security Alliancesecurityalliancegroup.com HQ: Miami, FL, United StatesReported employees: 1,001-5,000 | Miami, FL, United States | 1,001-5,000 | Exact match | 585 contacts → |
“Security Alliance is a highly experienced provider of security solutions for private and business environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | T&m Usa, LLCtmusallc.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 224 contacts → |
“T&M USA provides seamlessly integrated executive protection, investigative and consulting services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | At-Risk International, INCat-riskinternational.com HQ: Reston, VA, United StatesReported employees: 51-200 | Reston, VA, United States | 51-200 | Exact match | 152 contacts → |
“Our goal is to create and maintain safe environments by providing threat analysis, protection, investigations, consulting, intelligence and security training services everywhere…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Grupo Hawkgrupohawk.com.br HQ: Rio De Janeiro, BrazilReported employees: 501-1,000 | Rio De Janeiro, Brazil | 501-1,000 | Exact match | 112 contacts → |
“A company specialized in Property Surveillance, Electronic Monitoring, Risk Analysis, Security Projects, and Facilities Services for a wide range of institutions, commercial…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Black BOX Security, INCbbxsecurity.com HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 89 contacts → |
“Black Box Security Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | OPS Tech Allianceops-tech-alliance.com HQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 70 contacts → |
“Ops Tech Alliance (OTA) helps government organizations solve complex national security challenges by combining operational experience, technology, intelligence, cybersecurity, and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Advantage Sci, LLCadvantagesci.com HQ: Alexandria, VA, United StatesReported employees: 201-500 | Alexandria, VA, United States | 201-500 | Exact match | 63 contacts → |
“Advantage SCI is a professional security and counterintelligence firm, headquartered in Alexandria, Virginia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Justicia Investigationsjusticia.co.za HQ: Durban, South AfricaReported employees: 11-50 | Durban, South Africa | 11-50 | Exact match | 52 contacts → |
“Justicia Investigations provides a range of professional investigative services including: Forensic investigations | Facts and truth discovery and verification (credential…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | SOS Pakistansospakistan.com HQ: Multan, PakistanReported employees: 501-1,000 | Multan, Pakistan | 501-1,000 | Exact match | 45 contacts → |
“SOS's mission is to ensure that its clients, whether government or commercial concentrate on their primary objectives, leaving SOS to deal with matters related to security and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Contrack Security Services - CSScontrackss.com HQ: Cairo, EgyptReported employees: 1,001-5,000 | Cairo, Egypt | 1,001-5,000 | Exact match | 39 contacts → |
“Contrack Security Services is a sister company to Contrack Facility Management.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Research Electronics Internationalreiusa.net HQ: Cookeville, TN, United StatesReported employees: 51-200 | Cookeville, TN, United States | 51-200 | Exact match | 35 contacts → |
“For over 40 years, Research Electronics International (REI) has focused on protecting corporate information by designing and manufacturing technical security equipment to protect…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Brownsword Groupbrownsword.com HQ: United KingdomReported employees: 51-200 | United Kingdom | 51-200 | Exact match | 32 contacts → |
“Brownsword Group, incorporating Mike India 5, provide professional investigation, surveillance and counter surveillance services to the Insurance and Corporate sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Information Network Associates, INCina-inc.com HQ: Harrisburg, PA, United StatesReported employees: 51-200 | Harrisburg, PA, United States | 51-200 | Exact match | 30 contacts → |
“INA offers premier investigative and security services to government, private corporations and individuals.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Foresight Security Consultingforesight-sc.com HQ: Portland, OR, United StatesReported employees: 51-200 | Portland, OR, United States | 51-200 | Exact match | 30 contacts → |
“We are a veteran owned, Northwest based, global security consultancy offering Security Consulting and Executive Protection services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Haute Protection LA Capitalehauteprotection.ca HQ: Québec, QC, CanadaReported employees: 51-200 | Québec, QC, Canada | 51-200 | Exact match | 29 contacts → |
“Référence de choix en matière d’investigation et de protection, Haute Protection la Capitale offre une gamme étendue de solutions spécialisées à des clients provenant de toutes…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | AIR Support Tactical Security Limitedairsupport-tactical.com HQ: Valsayn, United StatesReported employees: 11-50 | Valsayn, United States | 11-50 | Exact match | 25 contacts → |
“Air Support Tactical Security Limited is an approved Protective Service Agency in Trinidad and Tobago.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Olgoonik Enterprises LLColgoonikglobalsecurity.net HQ: Anchorage, AK, United StatesReported employees: 1-10 | Anchorage, AK, United States | 1-10 | Exact match | 24 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Kiris Groupkirisgroup.com HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Our Chartered Security Professionals seamlessly integrate discreet and effective security into lifestyles and organisations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Olgoonik Global Security, LLColgoonikglobalsecurity.com HQ: Anchorage, AK, United StatesReported employees: 51-200 | Anchorage, AK, United States | 51-200 | Exact match | 23 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | XG Consultants Groupxgconsultantsgroup.com HQ: New York, CT, United StatesReported employees: 11-50 | New York, CT, United States | 11-50 | Exact match | 21 contacts → |
“XG Consultants Group, founded by a former FBI Supervisory Special Agent, is a global private investigative firm specializing in background screenings, social media research…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Vestaguard Securityvestaguard.be HQ: Izegem, BelgiumReported employees: 51-200 | Izegem, Belgium | 51-200 | Exact match | 21 contacts → |
“VESTAGuard Security is een jong & dynamisch bewakingsbedrijf dat begrippen als veiligheidsgarantie, bescherming, zekerheid en vertrouwen hoog in het vaandel draagt.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Groupe Trakgroupetrak.com HQ: Saint-Hubert, QC, CanadaReported employees: 51-200 | Saint-Hubert, QC, Canada | 51-200 | Exact match | 21 contacts → |
“Groupe Trak est une firme spécialisée dans le secteur de la sécurité corporative qui offre une gamme complète de services professionnels et personnalisés : SERVICES RH…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 360 Security Services360security.services HQ: Minneapolis, WI, United StatesReported employees: 11-50 | Minneapolis, WI, United States | 11-50 | Exact match | 20 contacts → |
“With over 200 years of combined experience across law enforcement, the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | On Watch LLConwatchusa.com HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 20 contacts → |
“On Watch LLC brings together over 200 years of US military, federal, state, and local law enforcement experience.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 674 company matches
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Counter surveillance companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
665 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 674 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Counter surveillance companies by location
2 lists · largest firstEvery Counter surveillance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for counter surveillance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many counter surveillance companies did RevenueBase find worldwide?
The saved snapshot records 674 matching company records, 9,651 tracked contacts and 665 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 counter surveillance companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/counter-surveillance-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗