Company lists · Data refreshed September 2026

Top 25 Enterprise security integrators worldwide

RevenueBase identified 25,398 enterprise security integrators worldwide as of September 2026 and tracks 532,909 professional contacts across them, including 91,211 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers enterprise 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 28, 2026. Country and city lists for enterprise 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 28, 2026 86% judged on-target in blind review
25,398Companies
532,909Contacts tracked
91,211Verified emails
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The 25 largest enterprise security integrators worldwide

Ranked by team size
Top 25 of 25,398 enterprise security integrators worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise 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 28, 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 28, 2026
2Indirect evidenceStockholm, SwedenHQ checked Sep 28, 202610001+6,335 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceStaines, United KingdomHQ checked Sep 28, 202610001+6,169 contacts →

Indirect evidence

“Making the world a safer place.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceHoffman Estates, IL, United StatesHQ checked Sep 28, 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 28, 2026
5Partial evidenceLund, SwedenHQ checked Sep 28, 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 28, 2026
6Partial evidenceSingaporeHQ checked Sep 28, 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 28, 2026
7Indirect evidenceBarueri, BrazilHQ checked Sep 28, 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 28, 2026
8Indirect evidenceSao Paulo, BrazilHQ checked Sep 28, 202610001+4,530 contacts →

Indirect evidence

“A SegurPro é o próximo passo em segurança privada.”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceIssy-les-moulineaux, FranceHQ checked Sep 28, 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 28, 2026
10Partial evidenceMadrid, SpainHQ checked Sep 28, 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 28, 2026
11Indirect evidenceRoswell, GA, United StatesHQ checked Sep 28, 202610001+3,592 contacts →

Indirect evidence

“U.S.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidenceMilano, ItalyHQ checked Sep 28, 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 28, 2026
13Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 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 28, 2026
14Indirect evidenceAlpharetta, GA, United StatesHQ checked Sep 28, 2026n/a2,678 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceEssendon Fields, AustraliaHQ checked Sep 28, 20265,001-10,0001,813 contacts →

Partial evidence

“At Wilson Security, we are committed to building a safer future for everyone.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceMadrid, SpainHQ checked Sep 28, 2026n/a1,744 contacts →

Indirect evidence

“Siadde Soluciones es una compañía tecnológica, innovadora y competitiva en un contexto global.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceParis, FranceHQ checked Sep 28, 20261,001-5,0001,704 contacts →

Indirect evidence

“Acteur de référence des systèmes d’information augmentés par l’intégration stratégique de la data, Consort Group accompagne les entreprises pour leur permettre de valoriser ce…”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceNorth York, ON, CanadaHQ checked Sep 28, 20265,001-10,0001,632 contacts →

Indirect evidence

“Over 90 years of protecting the things that matter, we’ve seen more than most.”

Source: RevenueBase Database · checked Sep 28, 2026
19Partial evidenceAbu Dhabi, United Arab EmiratesHQ checked Sep 28, 202610001+1,541 contacts →

Partial evidence

“Welcome to Securiguard Middle East, Your answer for an Integrated Safety and Security Solutions in the UAE At Securiguard Middle East, we are driven by a commitment to make a…”

Source: RevenueBase Database · checked Sep 28, 2026
20Partial evidenceNorthampton, United KingdomHQ checked Sep 28, 202610001+1,508 contacts →

Partial evidence

“We are an intelligence-led security business.”

Source: RevenueBase Database · checked Sep 28, 2026
21Strong evidenceAbu Dhabi, United Arab EmiratesHQ checked Sep 28, 20261,001-5,0001,504 contacts →

Strong evidence

“From humble beginnings in 1977, SIBCA has grown to become a leading Solution Integrator Provider in UAE for Fire Protection and Life Safety Systems, Security Systems, HVAC…”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceBp12936, FranceHQ checked Sep 28, 202610001+1,455 contacts →

Partial evidence

“ICTS Europe is Europe’s leading security specialist.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceDiegem, BelgiumHQ checked Sep 28, 20265,001-10,0001,419 contacts →

Indirect evidence

“See a different world.”

Source: RevenueBase Database · checked Sep 28, 2026
24Partial evidenceRomeoville, IL, United StatesHQ checked Sep 28, 20261,001-5,0001,406 contacts →

Partial evidence

“As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.”

Source: RevenueBase Database · checked Sep 28, 2026
25Indirect evidenceSão Paulo, BrazilHQ checked Sep 28, 20265,001-10,0001,361 contacts →

Indirect evidence

“O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 25,398 enterprise security integrators worldwide

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Enterprise security integrators worldwide at a glance

As of Sep 28, 2026
17.1%Verified-email coverage
21.0Average contacts per company
11-50Median size (employees)
1.5%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
10,666
11-50
9,558
51-200
3,248
201-500
929
501-1,000
378
1,001-5,000
343
5,001-10,000
65
10001+
72

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 enterprise 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 enterprise security integrators are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “enterprise 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 enterprise 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 enterprise 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, 91,211 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 28, 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.

Enterprise security integrators by location

132 lists · largest first

Every Enterprise 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 enterprise 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 enterprise security integrators are there worldwide?

RevenueBase identified 25,398 enterprise 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 enterprise security integrators?

The United States leads with 4,077 companies, followed by India (1,711) and Brazil (1,494). Every enterprise security integrators list by country and city is linked on this page.

Which city has the most enterprise security integrators?

Sao Paulo leads with 387 headquartered companies, followed by Dubai (249) and London (238).

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 91,211 verified decision-maker contacts tracked across these 25,398 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 28, 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.