Company lists · Data refreshed November 2026

Top 25 Managed security services companies worldwide

Name: Managed security services companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 14,905 companies tracked

RevenueBase identified 14,905 company matches for managed security services companies worldwide as of November 2026 and tracks 378,016 professional contacts across them, including 77,192 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for managed security services companies 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 November 5, 2026. Country and city lists for managed security services companies 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 Nov 5, 2026 How this list was built

14,905Companies

378,016Contacts tracked

77,192Verified emails

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The 25 largest managed security services companies worldwide

Ranked by team size

Top 25 of 14,905 company matches for managed security services companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	Securitas Security Services Usa, INC	Exact match	Parsippany, MI, United StatesHQ recorded Nov 5, 2026	10001+	40,551 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Verisure	Exact match	Global Hq - Versoix, GermanyHQ recorded Nov 5, 2026	10001+	16,176 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 and number one…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Private Sector	Exact match	United StatesHQ recorded Nov 5, 2026	n/a	13,149 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Nov 5, 2026	10001+	11,878 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Sophos	Exact match	Abingdon, United KingdomHQ recorded Nov 5, 2026	5,001-10,000	5,283 contacts →
	Exact match “Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Alliedbarton Security Services	Exact match	Santa Ana, United StatesHQ recorded Nov 5, 2026	10001+	4,894 contacts →
	Exact match “We've merged!” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 5, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Arctic Wolf	Exact match	Eden Prairie, United StatesHQ recorded Nov 5, 2026	1,001-5,000	3,355 contacts →
	Exact match “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Orsegups Participações S A	Exact match	São José, BrazilHQ recorded Nov 5, 2026	5,001-10,000	2,635 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 · Nov 5, 2026 · View company records in RevenueBase
10	Andy Frain Services	Exact match	Aurora, IL, United StatesHQ recorded Nov 5, 2026	5,001-10,000	2,393 contacts →
	Exact match “Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,171 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	Sunstates Security	Exact match	Raleigh, TX, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,740 contacts →
	Exact match “Sunstates Security, LLC is one of the industry's leading providers of contract security services with a differentiated approach to providing successful, cost-effective, quality…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Fortra	Exact match	Eden Prairie, MN, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,691 contacts →
	Exact match “Fortra delivers AI-amplified data security solutions that help organizations use and protect data with confidence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Securitas Colombia	Exact match	Bogota, ColombiaHQ recorded Nov 5, 2026	5,001-10,000	1,645 contacts →
	Exact match “Securitas es reconocida como una multinacional líder mundial en seguridad.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Securitas Canada	Exact match	North York, ON, CanadaHQ recorded Nov 5, 2026	5,001-10,000	1,631 contacts →
	Exact match “Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Weiser Security Services, INC	Exact match	New Orleans, LA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,540 contacts →
	Exact match “Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Protection 1 Security Solutions	Exact match	Romeoville, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,467 contacts →
	Exact match “As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Imvula Quality Protection	Exact match	Woodmead, South AfricaHQ recorded Nov 5, 2026	10001+	1,460 contacts →
	Exact match “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Securitas Belgium	Exact match	Diegem, BelgiumHQ recorded Nov 5, 2026	5,001-10,000	1,449 contacts →
	Exact match “See a different world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,346 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Tenon Group	Exact match	Gurgaon, IndiaHQ recorded Nov 5, 2026	10001+	1,239 contacts →
	Exact match “Tenon Group is a global provider of Integrated Facility Management, Security Services and Surveillance & Technology Solutions, helping businesses create safer, smarter and more…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	PER MAR Security Services	Exact match	Davenport, IA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,234 contacts →
	Exact match “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,209 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 · Nov 5, 2026 · View company records in RevenueBase
24	Watchguard Technologies	Exact match	Seattle, WA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,174 contacts →
	Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	St. Moritz Security Services, INC	Exact match	Pittsburgh, PA, United StatesHQ recorded Nov 5, 2026	5,001-10,000	1,168 contacts →
	Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Nov 5, 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 “managed security services companies”. 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 14,905 managed security services companies worldwide

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Managed security services companies worldwide at a glance

As of Nov 5, 2026

20.4%Verified-email coverage

25.4Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · London

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

6,810

11-50

5,034

51-200

1,834

201-500

567

501-1,000

252

1,001-5,000

251

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 managed security services companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “managed security services companies” 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 77,192 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 November 5, 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.

Managed security services companies by location

113 lists · largest first

Every Managed security services companies 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 “managed security services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed security services companies are there worldwide?

RevenueBase identified 14,905 company matches for managed security services companies worldwide as of November 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?

Securitas Security Services Usa, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most managed security services companies?

The United States leads with 4,069 companies, followed by India (1,121) and the United Kingdom (1,081). Every managed security services companies list by country and city is linked on this page.

Which city has the most managed security services companies?

London leads with 343 company records, followed by Sao Paulo (146) and Dubai (135).

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 77,192 professional contacts with verified work emails tracked across these 14,905 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 November 5, 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.