Company lists · Data refreshed September 2026

Top 25 Site security and monitoring services worldwide

Name: Site security and monitoring services worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 14,660 companies tracked

RevenueBase identified 14,660 company matches for site security and monitoring services worldwide as of September 2026 and tracks 403,887 professional contacts across them, including 41,323 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for site security and monitoring services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026. Country and city lists for site security and monitoring services follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built

14,660Companies

403,887Contacts tracked

41,323Verified emails

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The 25 largest site security and monitoring services worldwide

Ranked by team size

Top 25 of 14,660 company matches for site security and monitoring services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Allied Universal	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	10001+	62,804 contacts →
	Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Prosegur	Exact match	Madrid, SpainHQ recorded Sep 29, 2026	10001+	40,747 contacts →
	Exact match “50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	Securitas Security Services Usa, INC	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 29, 2026	10001+	38,634 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Verisure	Exact match	Global Hq - Versoix, GermanyHQ recorded Sep 29, 2026	10001+	14,199 contacts →
	Exact match “Verisure is the global leader in professionally monitored security services by customers served, with a market-leading presence across Europe and Latin America.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Grupo Haganá	Exact match	Sao Paulo, BrazilHQ recorded Sep 29, 2026	10001+	4,292 contacts →
	Exact match “O que é trabalhar no Grupo Haganá?” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Unemployed	Exact match	St. Petersburg, FL, United StatesHQ recorded Sep 29, 2026	n/a	4,038 contacts →
	Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Securitas France	Exact match	Issy-les-moulineaux, FranceHQ recorded Sep 29, 2026	10001+	3,843 contacts →
	Exact match “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	U.S. Security Associates, INC	Exact match	Roswell, GA, United StatesHQ recorded Sep 29, 2026	10001+	3,592 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Orsegups Participações S A	Exact match	São José, BrazilHQ recorded Sep 29, 2026	5,001-10,000	2,462 contacts →
	Exact match “A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Walden Security	Exact match	Chattanooga, TN, United StatesHQ recorded Sep 29, 2026	5,001-10,000	2,174 contacts →
	Exact match “Through an ISO® 9001:2015 Certified Quality Management System (QMS), Walden Security has earned an award-winning reputation for business excellence and employee satisfaction…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Security Segurança E Serviços	Exact match	São Paulo, BrazilHQ recorded Sep 29, 2026	5,001-10,000	2,165 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Pronet Security Services	Exact match	Istanbul, TürkiyeHQ recorded Sep 29, 2026	1,001-5,000	2,126 contacts →
	Exact match “Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Everon	Exact match	Irving, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,045 contacts →
	Exact match “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Wilson Security	Exact match	Essendon Fields, AustraliaHQ recorded Sep 29, 2026	5,001-10,000	1,813 contacts →
	Exact match “At Wilson Security, we are committed to building a safer future for everyone.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Securitas Canada	Exact match	North York, ON, CanadaHQ recorded Sep 29, 2026	5,001-10,000	1,632 contacts →
	Exact match “Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Securitas Belgium	Exact match	Diegem, BelgiumHQ recorded Sep 29, 2026	5,001-10,000	1,419 contacts →
	Exact match “See a different world.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Weiser Security Services, INC	Exact match	New Orleans, LA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,399 contacts →
	Exact match “Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Guardsmark	Exact match	New York, NY, United StatesHQ recorded Sep 29, 2026	10001+	1,375 contacts →
	Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Comando G8	Exact match	São Paulo, BrazilHQ recorded Sep 29, 2026	5,001-10,000	1,361 contacts →
	Exact match “O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	DSI Security Services	Exact match	Dothan, AL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,190 contacts →
	Exact match “DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Tenon Group	Exact match	Gurgaon, IndiaHQ recorded Sep 29, 2026	10001+	1,178 contacts →
	Exact match “With a wealth of 400+ years of cumulative experience of our senior management and a diverse team of trained professionals in India, Singapore and UK, we have consolidated our…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,138 contacts →
	Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	PER MAR Security Services	Exact match	Davenport, IA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,120 contacts →
	Exact match “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Solid Security Sp. Z O.O	Exact match	Warsaw, PolandHQ recorded Sep 29, 2026	10001+	1,068 contacts →
	Exact match “Solid Security to doświadczenie, wiedza oraz profesjonalizm działań na rynku ochrony osób i mienia.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	St. Moritz Security Services, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	1,062 contacts →
	Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “site security and monitoring services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 14,660 site security and monitoring services worldwide

See the full list, filter by size, metro and specialty, and access 41,323 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Site security and monitoring services worldwide at a glance

As of Sep 29, 2026

10.2%Verified-email coverage

27.6Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Sao Paulo

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

5,903

11-50

4,617

51-200

2,290

201-500

800

501-1,000

397

1,001-5,000

355

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for site security and monitoring services are linked below.
What qualifies: Company records worldwide whose business descriptions match “site security and monitoring services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 41,323 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Site security and monitoring services by location

51 lists · largest first

Every Site security and monitoring services 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “site security and monitoring services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many site security and monitoring services are there worldwide?

RevenueBase identified 14,660 company matches for site security and monitoring services worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Allied Universal tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most site security and monitoring services?

The United States leads with 2,468 companies, followed by Brazil (1,298) and the United Kingdom (1,254). Every site security and monitoring services list by country and city is linked on this page.

Which city has the most site security and monitoring services?

Sao Paulo leads with 248 company records, followed by London (231) and Paris (64).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 41,323 professional contacts with verified work emails tracked across these 14,660 companies; direct dials are available where recorded.

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.

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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 SmartSearch, 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.