Company lists · Data refreshed September 2026

Top 25 Enterprise security system providers worldwide

Name: Enterprise security system providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 25,672 companies tracked

RevenueBase identified 25,672 enterprise security system providers worldwide as of September 2026 and tracks 454,367 professional contacts across them, including 84,741 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers enterprise security system providers 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 system providers 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

25,672Companies

454,367Contacts tracked

84,741Verified emails

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The 25 largest enterprise security system providers worldwide

Ranked by team size

Top 25 of 25,672 enterprise security system providers 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 system providers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Allied Universal	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	10001+	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 28, 2026
2	Securitas Group	Indirect evidence	Stockholm, SwedenHQ checked Sep 28, 2026	10001+	6,335 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
3	Chubb Fire & Security	Indirect evidence	Staines, United KingdomHQ checked Sep 28, 2026	10001+	6,169 contacts →
	Indirect evidence “Making the world a safer place.” Source: RevenueBase Database · checked Sep 28, 2026
4	Convergint	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 28, 2026	10001+	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
5	TYCO	Partial evidence	Cork, IrelandHQ checked Sep 28, 2026	10001+	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 28, 2026
6	Axis Communications	Partial evidence	Lund, SwedenHQ checked Sep 28, 2026	1,001-5,000	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 28, 2026
7	Graber Sistemas DE Segurança	Indirect evidence	Barueri, BrazilHQ checked Sep 28, 2026	10001+	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
8	Securitas France	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 28, 2026	10001+	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
9	Securitas Seguridad España	Partial evidence	Madrid, SpainHQ checked Sep 28, 2026	10001+	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
10	Sicuritalia S.P.A	Partial evidence	Milano, ItalyHQ checked Sep 28, 2026	10001+	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
11	Allegion	Indirect evidence	Dublin 7, IrelandHQ checked Sep 28, 2026	10001+	3,024 contacts →
	Indirect evidence “Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Source: RevenueBase Database · checked Sep 28, 2026
12	Grupo GR	Indirect evidence	São Paulo, BrazilHQ checked Sep 28, 2026	10001+	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
13	Verkada	Indirect evidence	San Mateo, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,683 contacts →
	Indirect evidence “Transforming how organizations protect people and places.” Source: RevenueBase Database · checked Sep 28, 2026
14	Automated Systems Design, INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	n/a	2,678 contacts →
	Partial evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 28, 2026
15	Genetec	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 28, 2026	1,001-5,000	2,202 contacts →
	Indirect evidence “Genetec is a global technology company that helps organizations secure and manage their environments.” Source: RevenueBase Database · checked Sep 28, 2026
16	Pronet Security Services	Partial evidence	Istanbul, TürkiyeHQ checked Sep 28, 2026	1,001-5,000	2,126 contacts →
	Partial evidence “Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Source: RevenueBase Database · checked Sep 28, 2026
17	Everon	Partial evidence	Irving, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,045 contacts →
	Partial evidence “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: RevenueBase Database · checked Sep 28, 2026
18	Ninguno	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	n/a	1,744 contacts →
	Indirect evidence “Siadde Soluciones es una compañía tecnológica, innovadora y competitiva en un contexto global.” Source: RevenueBase Database · checked Sep 28, 2026
19	Fidelity ADT	Partial evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	10001+	1,544 contacts →
	Partial evidence “FIDELITY ADT COMMERCIAL Fidelity ADT Commercial, a division of Fidelity ADT is a leading provider of integrated retail performance and security solutions, deployed today at more…” Source: RevenueBase Database · checked Sep 28, 2026
20	SIBCA	Strong evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 28, 2026	1,001-5,000	1,504 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
21	Securitas Belgium	Indirect evidence	Diegem, BelgiumHQ checked Sep 28, 2026	5,001-10,000	1,419 contacts →
	Indirect evidence “See a different world.” Source: RevenueBase Database · checked Sep 28, 2026
22	Protection 1 Security Solutions	Partial evidence	Romeoville, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,406 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
23	Comando G8	Indirect evidence	São Paulo, BrazilHQ checked Sep 28, 2026	5,001-10,000	1,361 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
24	Grupo Atlas DE Seguridad Integral	Indirect evidence	Cali, ColombiaHQ checked Sep 28, 2026	10001+	1,328 contacts →
	Indirect evidence “Somos una empresa de seguridad integral, incorporando la tecnología y la innovación como herramientas para asegurar la sostenibilidad de las organizaciones, con un equipo humano…” Source: RevenueBase Database · checked Sep 28, 2026
25	Vector Security	Partial evidence	Warrendale, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,287 contacts →
	Partial evidence “Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Source: RevenueBase Database · checked Sep 28, 2026

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: enterprise security system providers. 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 enterprise security system providers.
Partial evidence: Its own public description names part of enterprise security system providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise security system providers. 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 25,672 enterprise security system providers worldwide

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Enterprise security system providers worldwide at a glance

As of Sep 28, 2026

18.7%Verified-email coverage

17.7Average 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

11,550

11-50

9,267

51-200

3,060

201-500

851

501-1,000

313

1,001-5,000

289

5,001-10,000

10001+

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 system providers, 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 system providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “enterprise security system providers”. 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 system providers), 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 system providers, 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, 84,741 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 system providers by location

106 lists · largest first

Every Enterprise security system providers 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 system providers, 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 system providers are there worldwide?

RevenueBase identified 25,672 enterprise security system providers 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?

Allied Universal, headquartered in Irvine, tops this list with the largest team on record.

Which country has the most enterprise security system providers?

The United States leads with 3,637 companies, followed by the United Kingdom (1,986) and Brazil (1,861). Every enterprise security system providers list by country and city is linked on this page.

Which city has the most enterprise security system providers?

Sao Paulo leads with 388 headquartered companies, followed by London (255) and Dubai (216).

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 84,741 verified decision-maker contacts tracked across these 25,672 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.