Company lists · Data refreshed September 2026

Top 25 Industrial control system security contractors worldwide

Name: Industrial control system security contractors worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 6,454 companies tracked

RevenueBase identified 6,454 company matches for industrial control system security contractors worldwide as of September 2026 and tracks 88,324 professional contacts across them, including 25,360 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for industrial control system security contractors 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 28, 2026. Country and city lists for industrial control system security contractors 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 28, 2026 How this list was built

6,454Companies

88,324Contacts tracked

25,360Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest industrial control system security contractors worldwide

Ranked by team size

Top 25 of 6,454 company matches for industrial control system security contractors worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 28, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3	Airbus Protect	Exact match	Blagnac, FranceHQ recorded Sep 28, 2026	1,001-5,000	1,431 contacts →
	Exact match “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
5	Brosnan Risk Consultants	Exact match	Pearl River, NY, United StatesHQ recorded Sep 28, 2026	5,001-10,000	1,050 contacts →
	Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Onet Sécurité	Exact match	Marseille, FranceHQ recorded Sep 28, 2026	10001+	1,007 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Prime Controls	Exact match	Lewisville, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	857 contacts →
	Exact match “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Omega Risk Solutions	Exact match	Grand Baie, MauritiusHQ recorded Sep 28, 2026	5,001-10,000	824 contacts →
	Exact match “Omega Risk Solutions offers advanced, integrated security solutions based on a thorough understanding of its clients’ requirements in order to present them with innovative and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Securitas Norge	Exact match	Oslo, NorwayHQ recorded Sep 28, 2026	5,001-10,000	792 contacts →
	Exact match “Securitas AS er det største og eldste sikkerhetsselskapet i Norge.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Halogen Group	Exact match	Lagos, NigeriaHQ recorded Sep 28, 2026	501-1,000	642 contacts →
	Exact match “Halogen Group formerly known as Halogen Security Company Limited is the leading Security Solutions Provider in West Africa.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	I-Tracing	Exact match	Courbevoie, FranceHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
12	Securitas Uruguay	Exact match	Montevideo, UruguayHQ recorded Sep 28, 2026	1,001-5,000	612 contacts →
	Exact match “Securitas es el principal socio de servicios de protección inteligente del mundo.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Security Alliance	Exact match	Miami, FL, United StatesHQ recorded Sep 28, 2026	1,001-5,000	553 contacts →
	Exact match “Security Alliance is a highly experienced provider of security solutions for private and business environments.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Dragos, INC	Exact match	Hanover, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	551 contacts →
	Exact match “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Tech Systems Inc. TSI	Exact match	Buford, GA, IndiaHQ recorded Sep 28, 2026	501-1,000	527 contacts →
	Exact match “Since 1987, Tech Systems, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Xcelerate Solutions	Exact match	Mclean, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	447 contacts →
	Exact match “At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	PT Itsec Asia TBK	Exact match	Jakarta, IndonesiaHQ recorded Sep 28, 2026	201-500	388 contacts →
	Exact match “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	PCSS	Exact match	SingaporeHQ recorded Sep 28, 2026	501-1,000	387 contacts →
	Exact match “PCSS is a Singapore-based systems integrator with more than 25 years of experience and accolades in providing secure, reliable and state-of-the-art security solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Esec Forte Technologies	Exact match	Gurugram, IndiaHQ recorded Sep 28, 2026	201-500	363 contacts →
	Exact match “eSec Forte® Technologies is a CMMi Level 3 certified Global Consulting and IT Security Services company with offerings across Cloud Security, Cyber Forensics, Malware Detection…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Dataprotect	Exact match	Casablanca, MoroccoHQ recorded Sep 28, 2026	51-200	324 contacts →
	Exact match “DATAPROTECT is a company that is specialized in information security.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Grupo Liberdade	Exact match	São Paulo, BrazilHQ recorded Sep 28, 2026	1,001-5,000	304 contacts →
	Exact match “Há mais de 25 anos no mercado, com atuação nacional e com uma estrutura moderna, o Grupo Liberdade tem se destacado na execução de serviços de segurança que não se limitam a…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Doyle Security Services, Inc. DSS	Exact match	Rockville Centre, NY, United StatesHQ recorded Sep 28, 2026	1,001-5,000	275 contacts →
	Exact match “Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	MNC Automation PVT LTD	Exact match	IndiaHQ recorded Sep 28, 2026	n/a	262 contacts →
	Exact match “MNC Automation Pvt.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	NGMSA	Exact match	Al-khobar, Saudi ArabiaHQ recorded Sep 28, 2026	201-500	259 contacts →
	Exact match “NGMSA has been delivering a kingdom-wide, state of the art integrated security solution known as the command, control, and intelligence (C2I) system and HCIS-compliant security…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Baxter Clewis Cybersecurity	Exact match	Cedar Hill, TX, United StatesHQ recorded Sep 28, 2026	201-500	255 contacts →
	Exact match “Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Recorded in the RevenueBase company graph · Sep 28, 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 “industrial control system security contractors”. 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 6,454 industrial control system security contractors worldwide

See the full list, filter by size, metro and specialty, and access 25,360 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Industrial control system security contractors worldwide at a glance

As of Sep 28, 2026

28.7%Verified-email coverage

13.7Average contacts per company

1-10Median size (employees)

1.6%Largest-city concentration · London

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,430

11-50

2,073

51-200

668

201-500

152

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 industrial control system security contractors are linked below.
What qualifies: Company records worldwide whose business descriptions match “industrial control system security contractors” 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 25,360 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 28, 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.

Industrial control system security contractors by location

40 lists · largest first

Every Industrial control system 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 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 “industrial control system security contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many industrial control system security contractors are there worldwide?

RevenueBase identified 6,454 company matches for industrial control system security contractors 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?

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

Which country has the most industrial control system security contractors?

The United States leads with 1,515 companies, followed by the United Kingdom (363) and France (277). Every industrial control system security contractors list by country and city is linked on this page.

Which city has the most industrial control system security contractors?

London leads with 105 company records, followed by Sao Paulo (78) and Paris (58).

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 25,360 professional contacts with verified work emails tracked across these 6,454 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 6,454 industrial control system security contractors worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.