Company lists · Data refreshed November 2026

Top 25 Critical infrastructure security integrators worldwide

RevenueBase identified 4,492 company matches for critical infrastructure security integrators worldwide as of November 2026 and tracks 92,969 professional contacts across them, including 30,123 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for critical infrastructure security integrators 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 critical infrastructure security integrators 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
4,492Companies
92,969Contacts tracked
30,123Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest critical infrastructure security integrators worldwide

Ranked by team size
Top 25 of 4,492 company matches for critical infrastructure security integrators 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHoffman Estates, IL, United StatesHQ recorded Nov 5, 202610001+6,031 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 · Nov 5, 2026 · View company records in RevenueBase
2Exact matchMilan, ItalyHQ recorded Nov 5, 202610001+3,593 contacts →

Exact match

“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchTysons, VA, United StatesHQ recorded Nov 5, 20265,001-10,0003,496 contacts →

Exact match

“M.C.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchNew York, United StatesHQ recorded Nov 5, 2026501-1,000779 contacts →

Exact match

“Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchBangalore, IndiaHQ recorded Nov 5, 20261,001-5,000720 contacts →

Exact match

“Value Point Systems, one of the leading Digital Systems & Services Integrator company in South Asia.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchHanover, MD, United StatesHQ recorded Nov 5, 2026501-1,000670 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 · Nov 5, 2026 · View company records in RevenueBase
7Exact matchLissieu, FranceHQ recorded Nov 5, 20261,001-5,000574 contacts →

Exact match

“Byblos Group est un groupe indépendant spécialisé dans la protection des personnes, des biens et des données, avec une approche sur mesure, fondée sur l’excellence opérationnelle…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchBuford, ON, IndiaHQ recorded Nov 5, 2026501-1,000562 contacts →

Exact match

“Since 1987, Tech Systems, Inc.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchRiyadh, Saudi ArabiaHQ recorded Nov 5, 2026501-1,000553 contacts →

Exact match

“World-class leading edge cyber capabilities to enable and protect economic and physical critical infrastructure and government services.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchRiyadh, Saudi ArabiaHQ recorded Nov 5, 2026501-1,000507 contacts →

Exact match

“Since our inception in 1994, SETRA has evolved from pioneers in computer site preparation to expert system integrators, delivering end-to-end turnkey solutions across various…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Nov 5, 2026501-1,000472 contacts →

Exact match

“CPX is redefining how nations and industries secure their future.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchIssy-les-moulineaux, FranceHQ recorded Nov 5, 2026201-500465 contacts →

Exact match

“En tant qu’intégrateur ouvert de solutions de sûreté électroniques, nous vous accompagnons dans la protection de vos biens et personnes.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchMclean, VA, United StatesHQ recorded Nov 5, 2026501-1,000459 contacts →

Exact match

“As a dynamic systems integrator, SMS offers proven solutions in engineering, operations, cybersecurity, and digital transformation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchMclean, VA, United StatesHQ recorded Nov 5, 20261,001-5,000458 contacts →

Exact match

“At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchAg. Paraskevi, GreeceHQ recorded Nov 5, 2026501-1,000452 contacts →

Exact match

“Founded in 1985, Space Hellas is a leading system integrator that offers a comprehensive range of integrated ICT and security solutions and services complemented by after-sales…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchCourbevoie, FranceHQ recorded Nov 5, 20265,001-10,000448 contacts →

Exact match

“Equans Digital connects OT, IT and data to make your infrastructures truly controllable.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchSingaporeHQ recorded Nov 5, 2026501-1,000433 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 · Nov 5, 2026 · View company records in RevenueBase
18Exact matchBoulogne-billancourt, FranceHQ recorded Nov 5, 2026501-1,000406 contacts →

Exact match

“Metsys est un intégrateur de solutions de cybersécurité, d’infrastructure et de cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchSan Francisco, United StatesHQ recorded Nov 5, 2026201-500400 contacts →

Exact match

“We protect the world’s critical infrastructure from cyber threats.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchHamilton, New ZealandHQ recorded Nov 5, 2026501-1,000389 contacts →

Exact match

“Gallagher Security is a global leader in integrated technology solutions that help organizations around the world protect, secure, and manage people and assets.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchExeter, United KingdomHQ recorded Nov 5, 2026501-1,000389 contacts →

Exact match

“Trinity’s mission statement is simple - to provide high quality design, installation, commissioning and long term after care of Fire Detection, Fire Suppression, Life Safety and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchSao Paulo, BrazilHQ recorded Nov 5, 2026201-500359 contacts →

Exact match

“A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBethel, FL, United StatesHQ recorded Nov 5, 2026201-500358 contacts →

Exact match

“ComNet Communications is a national network infrastructure integrator delivering large-scale, mission-critical deployments across the United States.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchBradford, United KingdomHQ recorded Nov 5, 2026501-1,000352 contacts →

Exact match

“Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchReading, United KingdomHQ recorded Nov 5, 2026201-500327 contacts →

Exact match

“Bridewell is the trusted cyber security partner for organisations operating within Critical National Infrastructure (CNI), as well as companies who want the highest standard of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 4,492 critical infrastructure security integrators worldwide

See the full list, filter by size, metro and specialty, and access 30,123 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Critical infrastructure security integrators worldwide at a glance

As of Nov 5, 2026
32.4%Verified-email coverage
20.7Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · London
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
1,785
11-50
1,803
51-200
616
201-500
165
501-1,000
54
1,001-5,000
38
5,001-10,000
4
10001+
9

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 critical infrastructure security integrators are linked below.
What qualifies
Company records worldwide whose business descriptions match “critical infrastructure security integrators” 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 30,123 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.

Critical infrastructure security integrators by location

33 lists · largest first

Every Critical infrastructure security integrators 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 “critical infrastructure security integrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many critical infrastructure security integrators are there worldwide?

RevenueBase identified 4,492 company matches for critical infrastructure security integrators 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?

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

Which country has the most critical infrastructure security integrators?

The United States leads with 1,158 companies, followed by India (219) and the United Kingdom (212). Every critical infrastructure security integrators list by country and city is linked on this page.

Which city has the most critical infrastructure security integrators?

London leads with 64 company records, followed by Sao Paulo (56) and Dubai (54).

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 30,123 professional contacts with verified work emails tracked across these 4,492 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.

Ready to reach these companies? Verified emails and direct dials for all 4,492 critical infrastructure security integrators worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.