Company lists · Data refreshed September 2026
Top 25 Network security system installers worldwide
RevenueBase identified 9,272 network security system installers worldwide as of September 2026 and tracks 66,690 professional contacts across them, including 15,523 with verified work emails. The United States is the largest market and London the largest hub.
This list covers network security system installers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026. Country and city lists for network security system installers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.
The 25 largest network security system installers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 849 contacts → | ||||
Strong evidence “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 542 contacts → | ||||
Strong evidence “Securiton AG has been a leading manufacturer and installer of alarm and security systems since 1948 and is part of the Swiss Securitas Group.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 457 contacts → | ||||
Indirect evidence “En tant qu’intégrateur ouvert de solutions de sûreté électroniques, nous vous accompagnons dans la protection de vos biens et personnes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 386 contacts → | ||||
Indirect evidence “Progress is our motivation because we are convinced that it will lead us to a successful future – independent of industries, companies and social classes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 326 contacts → | ||||
Partial evidence “Kings Secure Technologies (KST) is a high-end, enterprise-level systems integrator.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 317 contacts → | ||||
Partial evidence “Novared is a leading Security Services Provider founded in 1995.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 302 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 273 contacts → | ||||
Partial evidence “Network Computing Architects, Inc.(NCA) is a rapidly growing, quality-driven technology provider of services and telecommunication products for businesses of all sizes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 269 contacts → | ||||
Partial evidence “As a leading IT security enterprise, the SITS Group stands for end-to-end security.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 263 contacts → | ||||
Strong evidence “Northland Controls designs, installs, manages and harmonizes physical security systems across the globe with unparalleled services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 240 contacts → | ||||
Strong evidence “GLS is a managed network and security services provider founded in 1998.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 239 contacts → | ||||
Strong evidence “Trillium Information Security Systems (TISS) is a leading global provider of cybersecurity solutions and services, established in 2005.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 235 contacts → | ||||
Partial evidence “AKS IT Services (an ISO 9001:2015 and ISO 27001:2013 certified company) is a leading IT Security Services and Solutions provider with over 7500 clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 232 contacts → | ||||
Strong evidence “One of the largest privately held national electronic security system integrator in the USA, NAVCO keeps you one step ahead of ever-changing technology.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 229 contacts → | ||||
Partial evidence “We are Essen Vision, ‘Digital Security Specialists’ whose sole focus for more than 28 years has been to provide digital protection that unlocks the true value of your security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 225 contacts → | ||||
Partial evidence “Family owned and operated since 1968, Alarm Detection Systems, Inc.(ADS) understands that nothing is more important than the safety of your family and the protection of your…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 223 contacts → | ||||
Strong evidence “At Electra Link, you’ll find a place where technology, engineering and innovation come together to reinvent the way people think about Network Structured Cabling Systems and Audio…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 220 contacts → | ||||
Indirect evidence “For over 20 years, leading companies in Telecom, Cybersecurity, Healthcare, Banking, New Media, and more have come to rely on Loginsoft as a trusted resource for technology talent.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 210 contacts → | ||||
Indirect evidence “Netdata is a leading global cybersecurity services partner with more than 200 certified engineers and over 1,500 certifications, widely recognized as a partner of Palo Alto…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 202 contacts → | ||||
Partial evidence “Electronic Security Integrator Access Control Closed Circuit Television Intercom” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 202 contacts → | ||||
Strong evidence “Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 192 contacts → | ||||
Partial evidence “At Red Hawk Fire & Security, we install, test and inspect, integrate, service and monitor a comprehensive range of advanced technologies custom designed for your specific business…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 191 contacts → | ||||
Partial evidence “STANLEY Security est devenu Securitas Technology en 2022.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 175 contacts → | ||||
Strong evidence “HiWAAY's Network Services specializes in network design, business process analysis, information security and managed IT services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 172 contacts → | ||||
Partial evidence “Depuis 1986, IVT Security s’adapte aux évolutions technologiques en matière de sécurité destinée aux professionnels.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: network security system installers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names network security system installers.
- Partial evidence
- Its own public description names part of network security system installers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name network security system installers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 9,272 network security system installers worldwide
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Network security system installers worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among network security system installers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for network security system installers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “network security system installers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names network security system installers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among network security system installers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 15,523 across the full list. 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.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Network security system installers by location
35 lists · largest firstEvery Network security system installers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Network security system installers based in the United States2,200
- Network security system installers based in the United Kingdom1,030
- Network security system installers based in Brazil429
- Network security system installers based in France420
- Network security system installers based in India373
- Network security system installers based in Canada282
- Network security system installers based in Italy244
- Network security system installers based in Australia226
- Network security system installers based in the Netherlands203
- Network security system installers based in Germany173
- Network security system installers based in Spain160
- Network security system installers based in Belgium119
- Network security system installers based in Mexico115
- Network security system installers based in Türkiye112
- Network security system installers based in the United Arab Emirates109
- Network security system installers based in South Africa107
- Network security system installers based in Poland81
- Network security system installers based in Sweden70
- Network security system installers based in Colombia65
- Network security system installers based in Ireland62
- Network security system installers based in Chile57
- Network security system installers based in Egypt46
- Network security system installers based in New Zealand45
- Network security system installers based in Portugal34
- Network security system installers based in Malaysia30
- Network security system installers based in Switzerland29
- Network security system installers based in Greece26
Cities
- Network security system installers based in London, United Kingdom130
- Network security system installers based in Sao Paulo, Brazil94
- Network security system installers based in Dubai, United Arab Emirates52
- Network security system installers based in New York, United States46
- Network security system installers based in Houston, United States35
- Network security system installers based in New Delhi, India27
- Network security system installers based in Miami, United States26
- Network security system installers based in Dallas, United States25
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names network security system installers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many network security system installers are there worldwide?
RevenueBase identified 9,272 network security system installers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Security 101, headquartered in West Palm Beach, tops this list with the largest team on record.
Which country has the most network security system installers?
The United States leads with 2,200 companies, followed by the United Kingdom (1,030) and Brazil (429). Every network security system installers list by country and city is linked on this page.
Which city has the most network security system installers?
London leads with 134 headquartered companies, followed by Sao Paulo (94) and Dubai (52).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 15,523 verified decision-maker contacts tracked across these 9,272 companies.
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 Smart Search, 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.