Company lists · Data refreshed September 2026
Top 25 Security contractor companies worldwide
RevenueBase identified 20,034 company matches for security contractor companies worldwide as of September 2026 and tracks 758,351 professional contacts across them, including 54,021 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for security contractor 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 September 21, 2026. Country and city lists for security contractor 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 security contractor companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 79,699 contacts → | ||||
Exact match “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 62,804 contacts → | ||||
Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 40,747 contacts → | ||||
Exact match “50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 38,634 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 10,843 contacts → | ||||
Exact match “Businesses face a wide range of risks and hazards that they, in one way or another, have to deal with.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 7,986 contacts → | ||||
Exact match “One of the largest companies in the professional services and security markets in Brazil.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 6,335 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 4,835 contacts → | ||||
Exact match “As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 4,610 contacts → | ||||
Exact match “Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 4,530 contacts → | ||||
Exact match “A SegurPro é o próximo passo em segurança privada.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 4,292 contacts → | ||||
Exact match “O que é trabalhar no Grupo Haganá?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 4,038 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 3,843 contacts → | ||||
Exact match “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 3,620 contacts → | ||||
Exact match “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 3,612 contacts → | ||||
Exact match “EVERYWHERE SECURITY MATTERS.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 3,592 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 3,387 contacts → | ||||
Exact match “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 3,349 contacts → | ||||
Exact match “Bidvest Protea Coin is a leading provider of integrated, intelligence driven risk management services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 3,140 contacts → | ||||
Exact match “Somos la empresa de seguridad de mayor prestigio en el Perú" Comenzamos en el año 1989, con solo 4 hombres de Seguridad, que creyeron en nuestro estilo de liderazgo y decidieron…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 3,106 contacts → | ||||
Exact match “Specialist Security Company offering worldwide protection services to a niche` market of VIP's and travelling executives.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 3,004 contacts → | ||||
Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 2,772 contacts → | ||||
Exact match “Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 2,500 contacts → | ||||
Exact match “The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 2,462 contacts → | ||||
Exact match “A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 2,365 contacts → | ||||
Exact match “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Recorded in the RevenueBase company graph · Sep 21, 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 “security contractor 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 20,034 security contractor companies worldwide
See the full list, filter by size, metro and specialty, and access 54,021 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Security contractor companies worldwide at a glance
As of Sep 21, 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 security contractor companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “security contractor 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 54,021 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 September 21, 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.
Security contractor companies by location
65 lists · largest firstEvery Security contractor companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security contractor companies based in the United States4,119
- Security contractor companies based in the United Kingdom1,946
- Security contractor companies based in Brazil1,053
- Security contractor companies based in France1,010
- Security contractor companies based in India913
- Security contractor companies based in Germany688
- Security contractor companies based in Canada679
- Security contractor companies based in the Netherlands527
- Security contractor companies based in Italy496
- Security contractor companies based in Australia486
- Security contractor companies based in South Africa442
- Security contractor companies based in Mexico437
- Security contractor companies based in Spain284
- Security contractor companies based in Argentina256
- Security contractor companies based in Colombia248
- Security contractor companies based in Chile220
- Security contractor companies based in Peru188
- Security contractor companies based in the United Arab Emirates184
- Security contractor companies based in Switzerland159
- Security contractor companies based in Nigeria137
- Security contractor companies based in Türkiye121
- Security contractor companies based in Belgium120
- Security contractor companies based in Ecuador104
- Security contractor companies based in Sweden104
- Security contractor companies based in Poland93
- Security contractor companies based in the Philippines75
- Security contractor companies based in Indonesia73
- Security contractor companies based in Saudi Arabia69
- Security contractor companies based in New Zealand66
- Security contractor companies based in Romania64
- Security contractor companies based in Israel54
- Security contractor companies based in Ireland53
- Security contractor companies based in Portugal52
- Security contractor companies based in Denmark50
- Security contractor companies based in Greece47
- Security contractor companies based in Qatar44
- Security contractor companies based in Czechia39
- Security contractor companies based in Norway37
- Security contractor companies based in Austria35
- Security contractor companies based in Finland28
Cities
- Security contractor companies based in London, United Kingdom524
- Security contractor companies based in Sao Paulo, Brazil230
- Security contractor companies based in New York, United States144
- Security contractor companies based in Los Angeles, United States123
- Security contractor companies based in Toronto, Canada108
- Security contractor companies based in Houston, United States100
- Security contractor companies based in Miami, United States83
- Security contractor companies based in Johannesburg, South Africa76
- Security contractor companies based in Chicago, United States63
- Security contractor companies based in Mumbai, India63
- Security contractor companies based in Rio De Janeiro, Brazil61
- Security contractor companies based in Dallas, United States58
- Security contractor companies based in Atlanta, United States55
- Security contractor companies based in Birmingham, United Kingdom52
- Security contractor companies based in Manchester, United Kingdom49
- Security contractor companies based in Austin, United States45
- Security contractor companies based in Phoenix, United States42
- Security contractor companies based in Las Vegas, United States40
- Security contractor companies based in Calgary, Canada39
- Security contractor companies based in Vancouver, Canada37
- Security contractor companies based in Washington, United States36
- Security contractor companies based in Denver, United States33
- Security contractor companies based in Mississauga, Canada32
- Security contractor companies based in San Diego, United States28
- Security contractor companies based in San Francisco, United States27
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 “security contractor companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security contractor companies are there worldwide?
RevenueBase identified 20,034 company matches for security contractor companies worldwide as of September 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?
G4s tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most security contractor companies?
The United States leads with 4,119 companies, followed by the United Kingdom (1,946) and Brazil (1,053). Every security contractor companies list by country and city is linked on this page.
Which city has the most security contractor companies?
London leads with 537 company records, followed by Sao Paulo (230) and New York (144).
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 54,021 professional contacts with verified work emails tracked across these 20,034 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 September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 20,034 security contractor 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 security contractor 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 20,034 matching company records for security contractor companies worldwide, with 758,351 tracked contacts and 54,021 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: September 21, 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 security contractor 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 |  G4sg4s.comHQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 79,699 contacts → |
“G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Allied Universalaus.comHQ: Irvine, CA, United StatesReported employees: 10001+ | Irvine, CA, United States | 10001+ | Exact match | 62,804 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Prosegurprosegur.comHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 40,747 contacts → |
“50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Securitas Security Services Usa, INCsecuritasinc.comHQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Securitas Nederlandsecuritas.nl HQ: Breukelen, United StatesReported employees: 1,001-5,000 | Breukelen, United States | 1,001-5,000 | Exact match | 10,843 contacts → |
“Businesses face a wide range of risks and hazards that they, in one way or another, have to deal with.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Gocil Tecnologia EM Segurança E Serviçosgocil.com.brHQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 7,986 contacts → |
“One of the largest companies in the professional services and security markets in Brazil.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Securitas Groupsecuritas.comHQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 6,335 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 |  Paladin Security Group LTDpaladinsecurity.comHQ: Burnaby, BC, CanadaReported employees: 10001+ | Burnaby, BC, Canada | 10001+ | Exact match | 4,835 contacts → |
“As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Certiscertisgroup.comHQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 4,610 contacts → |
“Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Segurprosegurpro.com.brHQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 4,530 contacts → |
“A SegurPro é o próximo passo em segurança privada.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Grupo Haganáhagana.com.brHQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 4,292 contacts → |
“O que é trabalhar no Grupo Haganá?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Securitas Francefrance.securitas.frHQ: Issy-les-moulineaux, FranceReported employees: 10001+ | Issy-les-moulineaux, France | 10001+ | Exact match | 3,843 contacts → |
“Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Securitas Seguridad Españasecuritas.esHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Inter-Con Securityicsecurity.comHQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Sicuritalia S.P.Asicuritalia.itHQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Bidvest Protea Coinproteacoin.co.zaHQ: City Of Tshwane, South AfricaReported employees: 10001+ | City Of Tshwane, South Africa | 10001+ | Exact match | 3,349 contacts → |
“Bidvest Protea Coin is a leading provider of integrated, intelligence driven risk management services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Lidermanliderman.com.peHQ: Lima, PeruReported employees: 10001+ | Lima, Peru | 10001+ | Exact match | 3,140 contacts → |
“Somos la empresa de seguridad de mayor prestigio en el Perú" Comenzamos en el año 1989, con solo 4 hombres de Seguridad, que creyeron en nuestro estilo de liderazgo y decidieron…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SSIsecurityservicesinternational.co.uk HQ: United KingdomReported employees: Not recorded | United Kingdom | Not recorded | Exact match | 3,106 contacts → |
“Specialist Security Company offering worldwide protection services to a niche` market of VIP's and travelling executives.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Securitas Sverige ABsecuritas.seHQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Grupo GRgrupogr.com.brHQ: São Paulo, BrazilReported employees: 10001+ | São Paulo, Brazil | 10001+ | Exact match | 2,772 contacts → |
“Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Culver City, CA, United StatesReported employees: 5,001-10,000 | Culver City, CA, United States | 5,001-10,000 | Exact match | 2,500 contacts → |
“The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Orsegups Participações S Aorsegups.com.brHQ: São José, BrazilReported employees: 5,001-10,000 | São José, Brazil | 5,001-10,000 | Exact match | 2,462 contacts → |
“A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Paragon Securityparagonsecurity.caHQ: Toronto, ON, CanadaReported employees: 1,001-5,000 | Toronto, ON, Canada | 1,001-5,000 | Exact match | 2,365 contacts → |
“Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 20,034 company matches
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Security contractor companies: dataset insights
September 21, 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
19,892 records in the displayed employee bands.
142 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 20,034 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: September 21, 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 ↗
Security contractor companies by location
65 lists · largest firstEvery Security contractor companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security contractor companies based in the United States4,119
- Security contractor companies based in the United Kingdom1,946
- Security contractor companies based in Brazil1,053
- Security contractor companies based in France1,010
- Security contractor companies based in India913
- Security contractor companies based in Germany688
- Security contractor companies based in Canada679
- Security contractor companies based in the Netherlands527
- Security contractor companies based in Italy496
- Security contractor companies based in Australia486
- Security contractor companies based in South Africa442
- Security contractor companies based in Mexico437
- Security contractor companies based in Spain284
- Security contractor companies based in Argentina256
- Security contractor companies based in Colombia248
- Security contractor companies based in Chile220
- Security contractor companies based in Peru188
- Security contractor companies based in the United Arab Emirates184
- Security contractor companies based in Switzerland159
- Security contractor companies based in Nigeria137
- Security contractor companies based in Türkiye121
- Security contractor companies based in Belgium120
- Security contractor companies based in Ecuador104
- Security contractor companies based in Sweden104
- Security contractor companies based in Poland93
- Security contractor companies based in the Philippines75
- Security contractor companies based in Indonesia73
- Security contractor companies based in Saudi Arabia69
- Security contractor companies based in New Zealand66
- Security contractor companies based in Romania64
- Security contractor companies based in Israel54
- Security contractor companies based in Ireland53
- Security contractor companies based in Portugal52
- Security contractor companies based in Denmark50
- Security contractor companies based in Greece47
- Security contractor companies based in Qatar44
- Security contractor companies based in Czechia39
- Security contractor companies based in Norway37
- Security contractor companies based in Austria35
- Security contractor companies based in Finland28
Cities
- Security contractor companies based in London, United Kingdom524
- Security contractor companies based in Sao Paulo, Brazil230
- Security contractor companies based in New York, United States144
- Security contractor companies based in Los Angeles, United States123
- Security contractor companies based in Toronto, Canada108
- Security contractor companies based in Houston, United States100
- Security contractor companies based in Miami, United States83
- Security contractor companies based in Johannesburg, South Africa76
- Security contractor companies based in Chicago, United States63
- Security contractor companies based in Mumbai, India63
- Security contractor companies based in Rio De Janeiro, Brazil61
- Security contractor companies based in Dallas, United States58
- Security contractor companies based in Atlanta, United States55
- Security contractor companies based in Birmingham, United Kingdom52
- Security contractor companies based in Manchester, United Kingdom49
- Security contractor companies based in Austin, United States45
- Security contractor companies based in Phoenix, United States42
- Security contractor companies based in Las Vegas, United States40
- Security contractor companies based in Calgary, Canada39
- Security contractor companies based in Vancouver, Canada37
- Security contractor companies based in Washington, United States36
- Security contractor companies based in Denver, United States33
- Security contractor companies based in Mississauga, Canada32
- Security contractor companies based in San Diego, United States28
- Security contractor companies based in San Francisco, United States27
Questions about this company list
What does Exact match mean for security contractor 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 security contractor companies did RevenueBase find worldwide?
The saved snapshot records 20,034 matching company records, 758,351 tracked contacts and 54,021 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: September 21, 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 security contractor companies worldwide. Snapshot: September 21, 2026. https://revenuebase.ai/companies/browse/security-contractor-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 security contractor companies worldwide
RevenueBase records 20,034 matching company records for security contractor companies worldwide, with 758,351 tracked contacts and 54,021 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: September 21, 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 security contractor 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 | G4sg4s.com HQ: London, United KingdomReported employees: 10001+ | London, United Kingdom | 10001+ | Exact match | 79,699 contacts → |
“G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Allied Universalaus.com HQ: Irvine, CA, United StatesReported employees: 10001+ | Irvine, CA, United States | 10001+ | Exact match | 62,804 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Prosegurprosegur.com HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 40,747 contacts → |
“50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Securitas Security Services Usa, INCsecuritasinc.com HQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Securitas Nederlandsecuritas.nl HQ: Breukelen, United StatesReported employees: 1,001-5,000 | Breukelen, United States | 1,001-5,000 | Exact match | 10,843 contacts → |
“Businesses face a wide range of risks and hazards that they, in one way or another, have to deal with.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Gocil Tecnologia EM Segurança E Serviçosgocil.com.br HQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 7,986 contacts → |
“One of the largest companies in the professional services and security markets in Brazil.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Securitas Groupsecuritas.com HQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 6,335 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 8 | Paladin Security Group LTDpaladinsecurity.com HQ: Burnaby, BC, CanadaReported employees: 10001+ | Burnaby, BC, Canada | 10001+ | Exact match | 4,835 contacts → |
“As one of Canada’s Best Managed Companies, boasting Canada’s 10 Most Admired Corporate Cultures, Paladin is Canada’s leading security company, with services and superior expertise…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Certiscertisgroup.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 4,610 contacts → |
“Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Segurprosegurpro.com.br HQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 4,530 contacts → |
“A SegurPro é o próximo passo em segurança privada.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Grupo Haganáhagana.com.br HQ: Sao Paulo, BrazilReported employees: 10001+ | Sao Paulo, Brazil | 10001+ | Exact match | 4,292 contacts → |
“O que é trabalhar no Grupo Haganá?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Securitas Francefrance.securitas.fr HQ: Issy-les-moulineaux, FranceReported employees: 10001+ | Issy-les-moulineaux, France | 10001+ | Exact match | 3,843 contacts → |
“Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Securitas Seguridad Españasecuritas.es HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Inter-Con Securityicsecurity.com HQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Sicuritalia S.P.Asicuritalia.it HQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Bidvest Protea Coinproteacoin.co.za HQ: City Of Tshwane, South AfricaReported employees: 10001+ | City Of Tshwane, South Africa | 10001+ | Exact match | 3,349 contacts → |
“Bidvest Protea Coin is a leading provider of integrated, intelligence driven risk management services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Lidermanliderman.com.pe HQ: Lima, PeruReported employees: 10001+ | Lima, Peru | 10001+ | Exact match | 3,140 contacts → |
“Somos la empresa de seguridad de mayor prestigio en el Perú" Comenzamos en el año 1989, con solo 4 hombres de Seguridad, que creyeron en nuestro estilo de liderazgo y decidieron…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SSIsecurityservicesinternational.co.uk HQ: United KingdomReported employees: Not recorded | United Kingdom | Not recorded | Exact match | 3,106 contacts → |
“Specialist Security Company offering worldwide protection services to a niche` market of VIP's and travelling executives.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Securitas Sverige ABsecuritas.se HQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Grupo GRgrupogr.com.br HQ: São Paulo, BrazilReported employees: 10001+ | São Paulo, Brazil | 10001+ | Exact match | 2,772 contacts → |
“Fundado em 1992, o GRUPO GR se consolidou no mercado por sua qualidade e seriedade na implantação e operação de soluções de segurança e serviços para diversos tipos de clientes.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Culver City, CA, United StatesReported employees: 5,001-10,000 | Culver City, CA, United States | 5,001-10,000 | Exact match | 2,500 contacts → |
“The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Orsegups Participações S Aorsegups.com.br HQ: São José, BrazilReported employees: 5,001-10,000 | São José, Brazil | 5,001-10,000 | Exact match | 2,462 contacts → |
“A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Paragon Securityparagonsecurity.ca HQ: Toronto, ON, CanadaReported employees: 1,001-5,000 | Toronto, ON, Canada | 1,001-5,000 | Exact match | 2,365 contacts → |
“Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 20,034 company matches
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Security contractor companies: dataset insights
September 21, 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
19,892 records in the displayed employee bands.
142 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 20,034 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: September 21, 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 ↗
Security contractor companies by location
65 lists · largest firstEvery Security contractor companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security contractor companies based in the United States4,119
- Security contractor companies based in the United Kingdom1,946
- Security contractor companies based in Brazil1,053
- Security contractor companies based in France1,010
- Security contractor companies based in India913
- Security contractor companies based in Germany688
- Security contractor companies based in Canada679
- Security contractor companies based in the Netherlands527
- Security contractor companies based in Italy496
- Security contractor companies based in Australia486
- Security contractor companies based in South Africa442
- Security contractor companies based in Mexico437
- Security contractor companies based in Spain284
- Security contractor companies based in Argentina256
- Security contractor companies based in Colombia248
- Security contractor companies based in Chile220
- Security contractor companies based in Peru188
- Security contractor companies based in the United Arab Emirates184
- Security contractor companies based in Switzerland159
- Security contractor companies based in Nigeria137
- Security contractor companies based in Türkiye121
- Security contractor companies based in Belgium120
- Security contractor companies based in Ecuador104
- Security contractor companies based in Sweden104
- Security contractor companies based in Poland93
- Security contractor companies based in the Philippines75
- Security contractor companies based in Indonesia73
- Security contractor companies based in Saudi Arabia69
- Security contractor companies based in New Zealand66
- Security contractor companies based in Romania64
- Security contractor companies based in Israel54
- Security contractor companies based in Ireland53
- Security contractor companies based in Portugal52
- Security contractor companies based in Denmark50
- Security contractor companies based in Greece47
- Security contractor companies based in Qatar44
- Security contractor companies based in Czechia39
- Security contractor companies based in Norway37
- Security contractor companies based in Austria35
- Security contractor companies based in Finland28
Cities
- Security contractor companies based in London, United Kingdom524
- Security contractor companies based in Sao Paulo, Brazil230
- Security contractor companies based in New York, United States144
- Security contractor companies based in Los Angeles, United States123
- Security contractor companies based in Toronto, Canada108
- Security contractor companies based in Houston, United States100
- Security contractor companies based in Miami, United States83
- Security contractor companies based in Johannesburg, South Africa76
- Security contractor companies based in Chicago, United States63
- Security contractor companies based in Mumbai, India63
- Security contractor companies based in Rio De Janeiro, Brazil61
- Security contractor companies based in Dallas, United States58
- Security contractor companies based in Atlanta, United States55
- Security contractor companies based in Birmingham, United Kingdom52
- Security contractor companies based in Manchester, United Kingdom49
- Security contractor companies based in Austin, United States45
- Security contractor companies based in Phoenix, United States42
- Security contractor companies based in Las Vegas, United States40
- Security contractor companies based in Calgary, Canada39
- Security contractor companies based in Vancouver, Canada37
- Security contractor companies based in Washington, United States36
- Security contractor companies based in Denver, United States33
- Security contractor companies based in Mississauga, Canada32
- Security contractor companies based in San Diego, United States28
- Security contractor companies based in San Francisco, United States27
Questions about this company list
What does Exact match mean for security contractor 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 security contractor companies did RevenueBase find worldwide?
The saved snapshot records 20,034 matching company records, 758,351 tracked contacts and 54,021 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: September 21, 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 security contractor companies worldwide. Snapshot: September 21, 2026. https://revenuebase.ai/companies/browse/security-contractor-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗