Company lists · Data refreshed September 2026

Top 25 Telecom security companies worldwide

RevenueBase identified 3,804 telecom security companies worldwide as of September 2026 and tracks 74,351 professional contacts across them, including 20,325 with verified work emails and 8,048 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecom security companies 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 6, 2026. Country and city lists for telecom security companies 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
3,804Companies
74,351Contacts tracked
20,325Verified emails
8,048Mobile numbers
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The 25 largest telecom security companies worldwide

Ranked by team size
Top 25 of 3,804 telecom security companies worldwide, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to telecom security companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSunnyvale, CA, United StatesHQ checked Sep 6, 202610001+14,289 contacts →

Indirect evidence

“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.”

Source: RevenueBase Database · checked Sep 6, 2026
2Indirect evidence92707 Colombes, GermanyHQ checked Sep 6, 20261,001-5,0002,811 contacts →

Indirect evidence

“Alcatel-Lucent Enterprise provides secure networking and communication solutions which enable organizations and industries to accelerate their operational efficiencies and…”

Source: RevenueBase Database · checked Sep 6, 2026
3Partial evidenceIstanbul, TürkiyeHQ checked Sep 6, 20261,001-5,0002,126 contacts →

Partial evidence

“Pronet is the leading electronic security company that offers residential and commercial security solutions in Turkey.”

Source: RevenueBase Database · checked Sep 6, 2026
4Partial evidenceRomeoville, IL, United StatesHQ checked Sep 6, 20261,001-5,0001,406 contacts →

Partial evidence

“As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.”

Source: RevenueBase Database · checked Sep 6, 2026
5Partial evidenceWoodmead, South AfricaHQ checked Sep 6, 202610001+1,340 contacts →

Partial evidence

“At Imvula Quality Protection, we don’t just provide security, we create peace of mind.”

Source: RevenueBase Database · checked Sep 6, 2026
6Indirect evidenceHod-hasharon, IsraelHQ checked Sep 6, 2026501-1,000856 contacts →

Indirect evidence

“Allot Ltd.(NASDAQ: ALLT, TASE: ALLT) is a provider of leading innovative converged cybersecurity solutions and network intelligence for service providers and enterprises…”

Source: RevenueBase Database · checked Sep 6, 2026
7Indirect evidenceCairo, EgyptHQ checked Sep 6, 2026501-1,000749 contacts →

Indirect evidence

“Established in 2016, CyShield is a premier digital transformation and technology solutions partner.”

Source: RevenueBase Database · checked Sep 6, 2026
8Partial evidenceStockholm, SwedenHQ checked Sep 6, 2026501-1,000638 contacts →

Partial evidence

“Enea is a global specialist in advanced telecom and cybersecurity software, with a vision to make the world’s communications safer and more efficient.”

Source: RevenueBase Database · checked Sep 6, 2026
9Indirect evidenceEssen, GermanyHQ checked Sep 6, 20261,001-5,000623 contacts →

Indirect evidence

“secunet – We are the Guardians of Europe's Digital Freedom.”

Source: RevenueBase Database · checked Sep 6, 2026
10Partial evidenceTulsa, TX, United StatesHQ checked Sep 6, 2026501-1,000572 contacts →

Partial evidence

“Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.”

Source: RevenueBase Database · checked Sep 6, 2026
11Partial evidenceBoca Raton, FL, United StatesHQ checked Sep 6, 2026501-1,000561 contacts →

Partial evidence

“ADT Inc, formerly The ADT Corporation, is an American company that provides residential, small and large business electronic security, fire protection, and other related alarm…”

Source: RevenueBase Database · checked Sep 6, 2026
12Indirect evidenceThane, IndiaHQ checked Sep 6, 2026501-1,000484 contacts →

Indirect evidence

“At ProTechmanize, we’re committed to making cybersecurity simpler, stronger, and more future ready for the organizations we serve.”

Source: RevenueBase Database · checked Sep 6, 2026
13Indirect evidencePortsmouth, NH, United StatesHQ checked Sep 6, 2026501-1,000470 contacts →

Indirect evidence

“We free IT leaders to do what matters.”

Source: RevenueBase Database · checked Sep 6, 2026
14Partial evidenceRed Bank, NJ, United StatesHQ checked Sep 6, 20261,001-5,000416 contacts →

Partial evidence

“United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.”

Source: RevenueBase Database · checked Sep 6, 2026
15Partial evidenceOr Yehuda, IsraelHQ checked Sep 6, 2026501-1,000410 contacts →

Partial evidence

“A global leader in Homeland Security (HLS), Communication Infrastructure and Defense Communications, with decades of experience delivering holistic, customized solutions.”

Source: RevenueBase Database · checked Sep 6, 2026
16Strong evidenceBusiness Bay, United Arab EmiratesHQ checked Sep 6, 20261,001-5,000394 contacts →

Strong evidence

“Established in 2006, XAD Technologies LLC is an ISO-certied company offering services in the elds of Telecommunication, IT networks, managed services, staff outsourcing, security…”

Source: RevenueBase Database · checked Sep 6, 2026
17Indirect evidenceJakarta, IndonesiaHQ checked Sep 6, 2026201-500388 contacts →

Indirect evidence

“ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.”

Source: RevenueBase Database · checked Sep 6, 2026
18Partial evidenceGurugram, IndiaHQ checked Sep 6, 2026201-500363 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 6, 2026
19Indirect evidenceCoulaines, FranceHQ checked Sep 6, 2026501-1,000356 contacts →

Indirect evidence

“Spécialiste de la télésurveillance, des systèmes d’alarmes et de la téléassistance depuis près de 40 ans, Nexecur s'engage pour votre sécurité en s'appuyant sur l'expérience et la…”

Source: RevenueBase Database · checked Sep 6, 2026
20Indirect evidenceLima, PeruHQ checked Sep 6, 2026201-500349 contacts →

Indirect evidence

“Somos la compañía del Grupo Telefónica pionera en seguridad tecnológica integral.”

Source: RevenueBase Database · checked Sep 6, 2026
21Indirect evidenceMiramar, FL, United StatesHQ checked Sep 6, 2026201-500345 contacts →

Indirect evidence

“Claro, a subsidiary of América Móvil, is a global integrator with over 20 years of experience and your partner for managing secure-by-design cybersecurity and information…”

Source: RevenueBase Database · checked Sep 6, 2026
22Indirect evidenceMumbai, IndiaHQ checked Sep 6, 2026201-500335 contacts →

Indirect evidence

“T A L A K U N C H I Networks Pvt.”

Source: RevenueBase Database · checked Sep 6, 2026
23Partial evidenceDublin 12, IrelandHQ checked Sep 6, 2026201-500335 contacts →

Partial evidence

“We deliver fully managed security, networking, cloud and communications services designed to drive enterprise.”

Source: RevenueBase Database · checked Sep 6, 2026
24Partial evidenceNashville, TN, United StatesHQ checked Sep 6, 2026201-500324 contacts →

Partial evidence

“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…”

Source: RevenueBase Database · checked Sep 6, 2026
25Partial evidenceSantiago, ChileHQ checked Sep 6, 2026201-500317 contacts →

Partial evidence

“Novared is a leading Security Services Provider founded in 1995.”

Source: RevenueBase Database · checked Sep 6, 2026

Showing 25 of 3,804 telecom security companies worldwide

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Telecom security companies worldwide at a glance

As of Sep 6, 2026
27.3%Verified-email coverage
10.8%Mobile-number coverage
19.5Average contacts per company
11-50Median size (employees)
2.2%Largest-city concentration · Sao Paulo
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
1,706
11-50
1,436
51-200
443
201-500
99
501-1,000
37
1,001-5,000
32
5,001-10,000
8
10001+
7

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 telecom security companies, 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
30 countries, largest first: the United States, Brazil, India, France, the United Kingdom, Spain, Canada, Mexico, Germany, Australia and 20 more. Country and city lists for telecom security companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “telecom security companies”. 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 telecom security companies), 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 telecom security companies, 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, 20,325 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 between September 6, 2026 and September 14, 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.

Telecom security companies by location

32 lists · largest first

Every Telecom security 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 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 telecom security companies, 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 telecom security companies are there worldwide?

RevenueBase identified 3,804 telecom security companies 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?

Fortinet, headquartered in Sunnyvale, tops this list with the largest team on record.

Which country has the most telecom security companies?

The United States leads with 689 companies, followed by Brazil (539) and India (451). Every telecom security companies list by country and city is linked on this page.

Which city has the most telecom security companies?

Sao Paulo leads with 84 headquartered companies, followed by Dubai (67) and Rio De Janeiro (44).

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 20,325 verified decision-maker contacts tracked across these 3,804 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 6, 2026 and September 14, 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.