Company lists · Data refreshed September 2026

Top 25 Data center security contractors worldwide

Name: Data center security contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 17,217 companies tracked

RevenueBase identified 17,217 data center security contractors worldwide as of September 2026 and tracks 256,257 professional contacts across them, including 54,373 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers data center security contractors 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 data center security contractors 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

17,217Companies

256,257Contacts tracked

54,373Verified emails

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The 25 largest data center security contractors worldwide

Ranked by team size

Top 25 of 17,217 data center security contractors worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to data center security contractors: 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	Convergint	Indirect evidence	Hoffman Estates, IL, United StatesHQ checked Sep 28, 2026	10001+	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 28, 2026
2	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
3	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
4	U.S. Security Associates, INC	Indirect evidence	Roswell, GA, United StatesHQ checked Sep 28, 2026	10001+	3,592 contacts →
	Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 28, 2026
5	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
6	Automated Systems Design, INC	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	n/a	2,678 contacts →
	Indirect evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 28, 2026
7	NIL LTD	Strong evidence	Ljubljana, SloveniaHQ checked Sep 28, 2026	n/a	2,523 contacts →
	Strong evidence “NIL is a globally recognized provider of advanced data center, network, cloud, cyber security solutions as well as services for business and industry environments, state…” Source: RevenueBase Database · checked Sep 28, 2026
8	Paragon Security	Partial evidence	Toronto, ON, CanadaHQ checked Sep 28, 2026	1,001-5,000	2,365 contacts →
	Partial evidence “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Source: RevenueBase Database · checked Sep 28, 2026
9	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,222 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 28, 2026
10	Securitas Canada	Indirect evidence	North York, ON, CanadaHQ checked Sep 28, 2026	5,001-10,000	1,632 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
11	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
12	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
13	Weiser Security Services, INC	Partial evidence	New Orleans, LA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,399 contacts →
	Partial evidence “Weiser Security Services is the 11th largest security service provider in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
14	Site سايت	Indirect evidence	Al Nakheel, Saudi ArabiaHQ checked Sep 28, 2026	501-1,000	1,378 contacts →
	Indirect evidence “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Source: RevenueBase Database · checked Sep 28, 2026
15	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
16	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
17	Titan Security Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,138 contacts →
	Partial evidence “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Source: RevenueBase Database · checked Sep 28, 2026
18	PER MAR Security Services	Partial evidence	Davenport, IA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,120 contacts →
	Partial evidence “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Source: RevenueBase Database · checked Sep 28, 2026
19	Securitas Critical Infrastructure Services, INC	Partial evidence	Herndon, VA, United StatesHQ checked Sep 28, 2026	10001+	1,118 contacts →
	Partial evidence “Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Source: RevenueBase Database · checked Sep 28, 2026
20	St. Moritz Security Services, INC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,062 contacts →
	Indirect evidence “Founded in 1982, St.” Source: RevenueBase Database · checked Sep 28, 2026
21	Seguritech	Indirect evidence	Ciudad De Mexico, MexicoHQ checked Sep 28, 2026	1,001-5,000	1,041 contacts →
	Indirect evidence “A lo largo de 30 años, hemos incursionado y evolucionado en distintas áreas atendiendo en el continente americano a clientes privados, corporativos y sector gobierno.” Source: RevenueBase Database · checked Sep 28, 2026
22	Onet Sécurité	Indirect evidence	Marseille, FranceHQ checked Sep 28, 2026	10001+	1,007 contacts →
	Indirect evidence “La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…” Source: RevenueBase Database · checked Sep 28, 2026
23	CIS Security Limited	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	1,001-5,000	919 contacts →
	Partial evidence “CIS Security is an independent security company equipped to help customers to solve the complex challenges in today’s digital, connected and regulated business world.” Source: RevenueBase Database · checked Sep 28, 2026
24	Strong Segurança, S.A	Partial evidence	Amadora, PortugalHQ checked Sep 28, 2026	5,001-10,000	893 contacts →
	Partial evidence “Security Company Electronics developers Systems integrator” Source: RevenueBase Database · checked Sep 28, 2026
25	Securitas Perú	Partial evidence	Magdalena Del Mar, PeruHQ checked Sep 28, 2026	1,001-5,000	891 contacts →
	Partial evidence “Securitas es socio líder en soluciones de protección inteligente.” 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: data center security contractors. 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 data center security contractors.
Partial evidence: Its own public description names part of data center security contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name data center security contractors. 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 17,217 data center security contractors worldwide

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Data center security contractors worldwide at a glance

As of Sep 28, 2026

21.2%Verified-email coverage

14.9Average 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

8,245

11-50

6,110

51-200

1,873

201-500

482

501-1,000

199

1,001-5,000

155

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 data center security contractors, 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 data center security contractors are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “data center security contractors”. 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 data center security contractors), 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 data center security contractors, 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, 54,373 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.

Data center security contractors by location

94 lists · largest first

Every Data center security contractors 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 data center security contractors, 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 data center security contractors are there worldwide?

RevenueBase identified 17,217 data center security contractors 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?

Convergint, headquartered in Hoffman Estates, tops this list with the largest team on record.

Which country has the most data center security contractors?

The United States leads with 3,782 companies, followed by Brazil (1,103) and the United Kingdom (925). Every data center security contractors list by country and city is linked on this page.

Which city has the most data center security contractors?

Sao Paulo leads with 263 headquartered companies, followed by London (186) and Dubai (127).

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 54,373 verified decision-maker contacts tracked across these 17,217 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.