Company lists · Data refreshed September 2026
Top 25 Security integration firms worldwide
RevenueBase identified 32,946 security integration firms worldwide as of September 2026 and tracks 754,251 professional contacts across them, including 102,503 with verified work emails. The United States is the largest market and London the largest hub.
This list covers security integration firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for security integration firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 integration firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 79,699 contacts → | ||||
Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 62,804 contacts → | ||||
Partial evidence “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 14,199 contacts → | ||||
Partial evidence “Verisure is the global leader in professionally monitored security services by customers served, with a market-leading presence across Europe and Latin America.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,335 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 6,169 contacts → | ||||
Indirect evidence “Making the world a safer place.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 5,707 contacts → | ||||
Indirect evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 5,384 contacts → | ||||
Partial evidence “Tyco offers comprehensive security solutions to protect people, facilities, and assets as part of Johnson Controls world leading portfolio of building products, technologies…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4,850 contacts → | ||||
Partial evidence “Axis enables a smarter and safer world by creating solutions for improving security and business performance.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4,610 contacts → | ||||
Partial evidence “Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,572 contacts → | ||||
Indirect evidence “A Graber atua de forma pioneira na prestação de serviços de segurança desde 1982, introduzindo o conceito de projetos integrados na área de segurança.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4,530 contacts → | ||||
Indirect evidence “A SegurPro é o próximo passo em segurança privada.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4,038 contacts → | ||||
Partial evidence “Excelsior Defense is a security and investigations company based out of St.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,843 contacts → | ||||
Partial evidence “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,620 contacts → | ||||
Partial evidence “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3,387 contacts → | ||||
Partial evidence “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,772 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,683 contacts → | ||||
Indirect evidence “Transforming how organizations protect people and places.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2,678 contacts → | ||||
Indirect evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2,500 contacts → | ||||
Partial evidence “The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,462 contacts → | ||||
Indirect evidence “A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2,365 contacts → | ||||
Partial evidence “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2,266 contacts → | ||||
Partial evidence “Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2,202 contacts → | ||||
Indirect evidence “Genetec is a global technology company that helps organizations secure and manage their environments.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2,165 contacts → | ||||
Indirect evidence “Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: security integration firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names security integration firms.
- Partial evidence
- Its own public description names part of security integration firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security integration firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 32,946 security integration firms worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 102,503 reachable decision-makers.
Free signup · no credit card
Security integration firms worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security integration firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for security integration firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security integration firms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names security integration firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among security integration firms, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 102,503 across the full list. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security integration firms by location
142 lists · largest firstEvery Security integration firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security integration firms based in the United States6,331
- Security integration firms based in the United Kingdom2,848
- Security integration firms based in Brazil1,867
- Security integration firms based in India1,710
- Security integration firms based in France1,477
- Security integration firms based in Italy894
- Security integration firms based in Canada866
- Security integration firms based in Germany792
- Security integration firms based in Australia757
- Security integration firms based in Mexico661
- Security integration firms based in the Netherlands653
- Security integration firms based in South Africa591
- Security integration firms based in Spain590
- Security integration firms based in the United Arab Emirates457
- Security integration firms based in Türkiye455
- Security integration firms based in Argentina419
- Security integration firms based in Colombia348
- Security integration firms based in Belgium334
- Security integration firms based in Chile324
- Security integration firms based in Sweden273
- Security integration firms based in Peru257
- Security integration firms based in Poland238
- Security integration firms based in Egypt228
- Security integration firms based in Saudi Arabia223
- Security integration firms based in Switzerland209
- Security integration firms based in Nigeria197
- Security integration firms based in Romania180
- Security integration firms based in Portugal165
- Security integration firms based in Kenya162
- Security integration firms based in Pakistan156
- Security integration firms based in Ireland148
- Security integration firms based in Malaysia143
- Security integration firms based in Indonesia130
- Security integration firms based in Israel127
- Security integration firms based in Morocco125
- Security integration firms based in New Zealand120
- Security integration firms based in the Philippines120
- Security integration firms based in Ecuador109
- Security integration firms based in Greece109
- Security integration firms based in Denmark105
- Security integration firms based in Qatar94
- Security integration firms based in Hungary85
- Security integration firms based in Russia80
- Security integration firms based in Austria66
- Security integration firms based in Ukraine62
- Security integration firms based in Norway61
- Security integration firms based in the Dominican Republic52
- Security integration firms based in Costa Rica51
- Security integration firms based in Finland49
- Security integration firms based in Serbia47
- Security integration firms based in Lebanon44
- Security integration firms based in Uruguay44
- Security integration firms based in Jordan43
- Security integration firms based in Panama42
- Security integration firms based in Croatia39
- Security integration firms based in Thailand39
- Security integration firms based in Bulgaria38
- Security integration firms based in Kuwait35
- Security integration firms based in Guatemala30
- Security integration firms based in Oman26
- Security integration firms based in Hong Kong25
Cities
- Security integration firms based in London, United Kingdom498
- Security integration firms based in Sao Paulo, Brazil430
- Security integration firms based in Dubai, United Arab Emirates215
- Security integration firms based in Bangalore, India171
- Security integration firms based in Istanbul, Türkiye143
- Security integration firms based in New York, United States143
- Security integration firms based in Mumbai, India132
- Security integration firms based in Nairobi, Kenya128
- Security integration firms based in Paris, France124
- Security integration firms based in Houston, United States121
- Security integration firms based in New Delhi, India121
- Security integration firms based in Rio De Janeiro, Brazil118
- Security integration firms based in Cairo, Egypt115
- Security integration firms based in Toronto, Canada107
- Security integration firms based in Buenos Aires, Argentina102
- Security integration firms based in Miami, United States99
- Security integration firms based in Johannesburg, South Africa98
- Security integration firms based in Los Angeles, United States96
- Security integration firms based in Riyadh, Saudi Arabia93
- Security integration firms based in Pune, India92
- Security integration firms based in Madrid, Spain89
- Security integration firms based in Santiago, Chile87
- Security integration firms based in Chennai, India83
- Security integration firms based in Dallas, United States83
- Security integration firms based in Stockholm, Sweden83
- Security integration firms based in Hyderabad, India76
- Security integration firms based in Sydney, Australia75
- Security integration firms based in Atlanta, United States71
- Security integration firms based in Bucharest, Romania68
- Security integration firms based in Rome, Italy67
- Security integration firms based in Melbourne, Australia63
- Security integration firms based in Belo Horizonte, Brazil62
- Security integration firms based in Cape Town, South Africa61
- Security integration firms based in Abu Dhabi, United Arab Emirates58
- Security integration firms based in Austin, United States58
- Security integration firms based in Manchester, United Kingdom58
- Security integration firms based in Campinas, Brazil56
- Security integration firms based in Doha, Qatar56
- Security integration firms based in Chicago, United States55
- Security integration firms based in Montreal, Canada55
- Security integration firms based in Noida, India54
- Security integration firms based in Ahmedabad, India52
- Security integration firms based in Auckland, New Zealand52
- Security integration firms based in Monterrey, Mexico52
- Security integration firms based in Berlin, Germany51
- Security integration firms based in Phoenix, United States49
- Security integration firms based in Calgary, Canada48
- Security integration firms based in Curitiba, Brazil47
- Security integration firms based in Porto Alegre, Brazil47
- Security integration firms based in Warsaw, Poland47
- Security integration firms based in Birmingham, United Kingdom45
- Security integration firms based in Mississauga, Canada45
- Security integration firms based in Tampa, United States45
- Security integration firms based in Barcelona, Spain41
- Security integration firms based in Las Vegas, United States40
- Security integration firms based in San Diego, United States39
- Security integration firms based in Denver, United States38
- Security integration firms based in Indianapolis, United States38
- Security integration firms based in Washington, United States38
- Security integration firms based in Ottawa, Canada37
- Security integration firms based in San Jose, United States36
- Security integration firms based in Charlotte, United States35
- Security integration firms based in Orlando, United States35
- Security integration firms based in Brisbane, Australia34
- Security integration firms based in San Francisco, United States34
- Security integration firms based in Glasgow, United Kingdom33
- Security integration firms based in Leeds, United Kingdom33
- Security integration firms based in Edmonton, Canada32
- Security integration firms based in Panama, Panama32
- Security integration firms based in San Antonio, United States32
- Security integration firms based in Baltimore, United States31
- Security integration firms based in Seattle, United States31
- Security integration firms based in Budapest, Hungary29
- Security integration firms based in Bristol, United Kingdom28
- Security integration firms based in Fort Lauderdale, United States28
- Security integration firms based in Columbia, United States27
- Security integration firms based in Athens, Greece26
- Security integration firms based in Leicester, United Kingdom26
- Security integration firms based in Nottingham, United Kingdom26
- Security integration firms based in Raleigh, United States26
- Security integration firms based in Portland, United States25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names security integration firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many security integration firms are there worldwide?
RevenueBase identified 32,946 security integration firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
G4s, headquartered in London, tops this list with the largest team on record.
Which country has the most security integration firms?
The United States leads with 6,331 companies, followed by the United Kingdom (2,848) and Brazil (1,867). Every security integration firms list by country and city is linked on this page.
Which city has the most security integration firms?
London leads with 510 headquartered companies, followed by Sao Paulo (430) and Dubai (215).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 102,503 verified decision-maker contacts tracked across these 32,946 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 32,946 security integration firms worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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 Smart Search, 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.