Company lists · Data refreshed September 2026

Top 25 IT security managed services worldwide

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 23,667 companies tracked

RevenueBase identified 23,667 company matches for IT security managed services worldwide as of September 2026 and tracks 293,724 professional contacts across them, including 98,007 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for IT security managed 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 21, 2026. Country and city lists for IT security managed 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 21, 2026 How this list was built

23,667Companies

293,724Contacts tracked

98,007Verified emails

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The 25 largest IT security managed services worldwide

Ranked by team size

Top 25 of 23,667 company matches for IT security managed services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Private Sector	Exact match	United StatesHQ recorded Sep 21, 2026	n/a	12,771 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	ELM Company	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 21, 2026	1,001-5,000	6,982 contacts →
	Exact match “Elm is the leading provider of innovative secure services & solutions to both public and private sectors in Saudi Arabia.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Sophos	Exact match	Abingdon, United KingdomHQ recorded Sep 21, 2026	5,001-10,000	4,925 contacts →
	Exact match “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Arctic Wolf	Exact match	Eden Prairie, MN, United StatesHQ recorded Sep 21, 2026	1,001-5,000	3,145 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 · Sep 21, 2026 · View company records in RevenueBase
5	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,222 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 · Sep 21, 2026 · View company records in RevenueBase
6	GURU	Exact match	Rockville, MD, United StatesHQ recorded Sep 21, 2026	n/a	1,906 contacts →
	Exact match “Established in 1995, GURU is an IT managed service provider that specializes in infrastructure support, systems integration, data architecture, data hosting, and cloud services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Eplus INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,749 contacts →
	Exact match “ePlus is a customer-first, services-led, results-driven and trusted industry leader that helps organizations secure, modernize, optimize, and scale every aspect of their IT…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	CMS	Exact match	Meudon La Foret, FranceHQ recorded Sep 21, 2026	n/a	1,519 contacts →
	Exact match “Société d'infogérance” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,232 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 · Sep 21, 2026 · View company records in RevenueBase
10	Watchguard Technologies	Exact match	Seattle, WA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,059 contacts →
	Exact match “WatchGuard® Technologies, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Synoptek	Exact match	Costa Mesa, CA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,037 contacts →
	Exact match “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 21, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Sep 21, 2026	1,001-5,000	844 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Softcell Technologies Global Pvt. LTD	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	501-1,000	763 contacts →
	Exact match “With 35 years of experience, Softcell Technologies Global is a trusted IT services provider specialising in (i) IT security and cybersecurity solutions,(ii) cloud / on-premise…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Apptix	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	n/a	762 contacts →
	Exact match “Apptix was acquired by Fusion Connect in 2016.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	TPX	Exact match	Austin, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	751 contacts →
	Exact match “TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	SISA	Exact match	Bengaluru, IndiaHQ recorded Sep 21, 2026	201-500	743 contacts →
	Exact match “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Huntress	Exact match	Columbia, MD, United StatesHQ recorded Sep 21, 2026	501-1,000	696 contacts →
	Exact match “Protect Your Endpoints, Identities, Logs, and Employees.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Simeio	Exact match	Alpharetta, GA, United StatesHQ recorded Sep 21, 2026	501-1,000	687 contacts →
	Exact match “Customers of all sizes globally rely on Simeio to help secure their organizations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	IT Solutions	Exact match	Fort Washington, PA, United StatesHQ recorded Sep 21, 2026	501-1,000	683 contacts →
	Exact match “With 30 years of experience as a trusted managed services provider, we're your dedicated partner in navigating the complex world of technology, so you can focus on growing your…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Teamlogic IT	Exact match	United StatesHQ recorded Sep 21, 2026	1,001-5,000	656 contacts →
	Exact match “TeamLogic IT provides IT service, support, project consultation and account management for businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Visual Edge IT	Exact match	North Canton, OH, United StatesHQ recorded Sep 21, 2026	1,001-5,000	655 contacts →
	Exact match “ABOUT VISUAL EDGE, INC.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Sep 21, 2026	501-1,000	641 contacts →
	Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	I-Tracing	Exact match	Courbevoie, FranceHQ recorded Sep 21, 2026	1,001-5,000	639 contacts →
	Exact match “I-TRACING, pure player and cybersecurity service provider leader in France, supports over 600 clients around the world in managing their cyber risks, from anticipating threats to…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Advens	Exact match	Paris, ItalyHQ recorded Sep 21, 2026	501-1,000	586 contacts →
	Exact match “Advens is a European, independent and outstanding leader in cybersecurity.” Recorded in the RevenueBase company graph · Sep 21, 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 “IT security managed 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 23,667 IT security managed services worldwide

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IT security managed services worldwide at a glance

As of Sep 21, 2026

33.4%Verified-email coverage

12.4Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

13,567

11-50

7,788

51-200

1,702

201-500

358

501-1,000

1,001-5,000

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 IT security managed services are linked below.
What qualifies: Company records worldwide whose business descriptions match “IT security managed 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 98,007 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 21, 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.

IT security managed services by location

119 lists · largest first

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

How many IT security managed services are there worldwide?

RevenueBase identified 23,667 company matches for IT security managed 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?

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

Which country has the most IT security managed services?

The United States leads with 7,817 companies, followed by the United Kingdom (1,762) and India (1,282). Every IT security managed services list by country and city is linked on this page.

Which city has the most IT security managed services?

London leads with 465 company records, followed by New York (230) and Sao Paulo (216).

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 98,007 professional contacts with verified work emails tracked across these 23,667 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 21, 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.