Company lists · Data refreshed September 2026

Top 25 Security integrators worldwide

RevenueBase identified 47,411 security integrators worldwide as of September 2026 and tracks 952,890 professional contacts across them, including 176,461 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers security integrators 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 21, 2026. Country and city lists for security integrators 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
47,411Companies
952,890Contacts tracked
176,461Verified emails
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The 25 largest security integrators worldwide

Ranked by team size
Top 25 of 47,411 security integrators worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to security integrators: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceLondon, United KingdomHQ checked Sep 21, 202610001+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 21, 2026
2Partial evidenceIrvine, CA, United StatesHQ checked Sep 21, 202610001+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 21, 2026
3Partial evidenceParsippany, NJ, United StatesHQ checked Sep 21, 202610001+38,634 contacts →

Partial evidence

Securitas knows Security.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceStockholm, SwedenHQ checked Sep 21, 202610001+6,335 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceStaines, United KingdomHQ checked Sep 21, 202610001+6,169 contacts →

Indirect evidence

“Making the world a safer place.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceHoffman Estates, IL, United StatesHQ checked Sep 21, 202610001+5,707 contacts →

Partial evidence

“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceCork, IrelandHQ checked Sep 21, 202610001+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 21, 2026
8Partial evidenceLund, SwedenHQ checked Sep 21, 20261,001-5,0004,850 contacts →

Partial evidence

“Axis enables a smarter and safer world by creating solutions for improving security and business performance.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceSingaporeHQ checked Sep 21, 202610001+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 21, 2026
10Indirect evidenceBarueri, BrazilHQ checked Sep 21, 202610001+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 21, 2026
11Partial evidenceIssy-les-moulineaux, FranceHQ checked Sep 21, 202610001+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 21, 2026
12Partial evidenceMadrid, SpainHQ checked Sep 21, 202610001+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 21, 2026
13Indirect evidenceRoswell, GA, United StatesHQ checked Sep 21, 202610001+3,592 contacts →

Indirect evidence

“U.S.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceHangzhou, ChinaHQ checked Sep 21, 202610001+3,586 contacts →

Partial evidence

“Founded in 2001, Hikvision focuses on integrated security and scenario-based digitalization.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceMilano, ItalyHQ checked Sep 21, 202610001+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 21, 2026
16Indirect evidenceAnkara, TürkiyeHQ checked Sep 21, 20261,001-5,0003,348 contacts →

Indirect evidence

“HAVELSAN, Türk Silahlı Kuvvetlerini Güçlendirme Vakfı'na bağlı, savunma ve bilişim sektörlerinde global çözümler sunan bir yazılım ve sistem entegratörü şirkettir.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceSão Paulo, BrazilHQ checked Sep 21, 202610001+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 21, 2026
18Indirect evidenceTysons, VA, United StatesHQ checked Sep 21, 20265,001-10,0002,761 contacts →

Indirect evidence

“M.C.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceSan Mateo, CA, United StatesHQ checked Sep 21, 20261,001-5,0002,683 contacts →

Indirect evidence

“Transforming how organizations protect people and places.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceAlpharetta, GA, United StatesHQ checked Sep 21, 2026n/a2,678 contacts →

Indirect evidence

“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceNoida, IndiaHQ checked Sep 21, 20261,001-5,0002,637 contacts →

Partial evidence

“As one of India’s leading system integrators, Velocis partners with organizations to turn technology into a catalyst for measurable business value.”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceWiesbaden, GermanyHQ checked Sep 21, 20261,001-5,0002,452 contacts →

Partial evidence

“Imprint: SVA is one of the leading system integrators in Germany.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceMelville, NY, United StatesHQ checked Sep 21, 20261,001-5,0002,413 contacts →

Partial evidence

“ADI | Snap One is a premier distributor serving customers worldwide with comprehensive security, audiovisual, and smart living solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
24Partial evidenceAurora, IL, United StatesHQ checked Sep 21, 20265,001-10,0002,266 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 21, 2026
25Indirect evidenceSão Paulo, BrazilHQ checked Sep 21, 20265,001-10,0002,165 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 21, 2026

Showing 25 of 47,411 security integrators worldwide

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Security integrators worldwide at a glance

As of Sep 21, 2026
18.5%Verified-email coverage
20.1Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · Sao Paulo
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
21,234
11-50
17,177
51-200
5,716
201-500
1,585
501-1,000
618
1,001-5,000
567
5,001-10,000
99
10001+
117

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 integrators, 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 integrators are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “security integrators”. 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 integrators), 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 integrators, 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, 176,461 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 21, 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 integrators by location

183 lists · largest first

Every Security integrators list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 integrators, 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 integrators are there worldwide?

RevenueBase identified 47,411 security integrators 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 integrators?

The United States leads with 9,256 companies, followed by the United Kingdom (3,503) and Brazil (2,737). Every security integrators list by country and city is linked on this page.

Which city has the most security integrators?

Sao Paulo leads with 674 headquartered companies, followed by London (559) and Dubai (468).

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 176,461 verified decision-maker contacts tracked across these 47,411 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 21, 2026.

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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 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.