Company lists · Data refreshed September 2026
Top 25 Transmission system cybersecurity companies worldwide
RevenueBase identified 792 transmission system cybersecurity companies worldwide as of September 2026 and tracks 11,584 professional contacts across them, including 3,920 with verified work emails. The United States is the largest market and London the largest hub.
This list covers transmission system cybersecurity 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 29, 2026. Country and city lists for transmission system cybersecurity 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.
The 25 largest transmission system cybersecurity companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 743 contacts → | ||||
Partial evidence “SISA is a global forensics-driven cybersecurity solutions company, trusted by leading organizations for securing their businesses with robust preventive, detective, and corrective…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 725 contacts → | ||||
Partial evidence “Claroty has redefined cyber-physical systems (CPS) protection with an unrivaled industry-centric platform built to secure mission-critical infrastructure.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 551 contacts → | ||||
Partial evidence “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 388 contacts → | ||||
Partial 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 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 375 contacts → | ||||
Indirect evidence “We protect the world’s critical infrastructure from cyber threats.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 191 contacts → | ||||
Partial evidence “S21Sec, Cyber Solutions by Thales, is a leading European Cybersecurity pure-player, with more than 400 security experts and an Iberian SOC.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 164 contacts → | ||||
Partial evidence “Founded in 2012, CryptoGen is the largest cybersecurity company in Srilanka specializing in the design, implementation, and management of advanced cyber defense solutions.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 156 contacts → | ||||
Partial evidence “AT & T Cybersecurity’s Edge-to-Edge technologies provide phenomenal threat intelligence, collaborative defense, security without the seams, and solutions that fit your business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 138 contacts → | ||||
Indirect evidence “Netsecurity is a dedicated cyber security company that helps companies before, during and after an attack.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 127 contacts → | ||||
Indirect evidence “Nixu is now DNV Cyber.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 126 contacts → | ||||
Partial evidence “Through our software-enabled hardware platforms, we enable secure and reliable operations, protecting against both today’s cybersecurity challenges and those yet to come.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 120 contacts → | ||||
Partial evidence “Auriseg, a global solutions leader in cybersecurity, is establishing a more secure digital environment by implementing comprehensive, integrated and long-term information security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 116 contacts → | ||||
Partial evidence “Clavister is a Swedish cybersecurity company protecting organisations with mission-critical applications for over two decades.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 116 contacts → | ||||
Indirect evidence “Foxguard delivers comprehensive OT Cyber Security and Compute Solutions tailored to meet the unique needs of critical infrastructures.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 106 contacts → | ||||
Indirect evidence “DIGITAL SOLUTIONS FOR THE GLOBAL ENERGY INDUSTRY BaxEnergy, a Yokogawa company, is a global full-service partner of energy companies and industrial operators, delivering…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 106 contacts → | ||||
Indirect evidence “Tribastion Technologies Pvt Ltd specializes in delivering comprehensive cyber security consulting and managed security services to individuals and organizations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 104 contacts → | ||||
Indirect evidence “We empower organizations with resilient, self-healing capabilities that prevent and neutralize even the most advanced cyber threats.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 101 contacts → | ||||
Indirect evidence “QOS Technology is a company of young, vibrant, and geeky folks with maverick idiosyncrasies who continues to stay ahead of the latest innovations in security, developing robust…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 83 contacts → | ||||
Indirect evidence “IP Protocol International Networks Consultants or IP Protocol INC in brief is a cyber security solutions & services provider based in Dubai, UAE, & Cairo, Egypt where its core…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 81 contacts → | ||||
Partial evidence “At Vertek, we deliver advanced cybersecurity solutions that empower businesses to protect their digital assets and achieve peace of mind.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 79 contacts → | ||||
Partial evidence “DEAS Cyber+ opera nel settore della cybersecurity con un approccio orientato alla sicurezza offensiva e alla comprensione concreta della minaccia.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 75 contacts → | ||||
Indirect evidence “REDLattice™ is a U.S-owned global defense tech company delivering preeminent digital access for its customers within the global intelligence community, law enforcement, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 70 contacts → | ||||
Indirect evidence “In Norse mythology, Heimdall is the watchful guardian of the gods, known for his extraordinary ability to see across worlds, hear even the faintest warning, and respond without…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 69 contacts → | ||||
Partial evidence “Trinity Cyber is an international cybersecurity firm that invents and operates innovative solutions to the most difficult cybersecurity challenges.” 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: transmission system cybersecurity companies. 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 transmission system cybersecurity companies.
- Partial evidence
- Its own public description names part of transmission system cybersecurity companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name transmission system cybersecurity companies. 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 792 transmission system cybersecurity companies worldwide
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Transmission system cybersecurity companies 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 transmission system cybersecurity 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
- Every country. Country and city lists for transmission system cybersecurity companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “transmission system cybersecurity 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 transmission system cybersecurity 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 transmission system cybersecurity 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, 3,920 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.
Transmission system cybersecurity companies by location
3 lists · largest firstEvery Transmission system cybersecurity companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 transmission system cybersecurity 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 transmission system cybersecurity companies are there worldwide?
RevenueBase identified 792 transmission system cybersecurity 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?
SISA, headquartered in Bengaluru, tops this list with the largest team on record.
Which country has the most transmission system cybersecurity companies?
The United States leads with 205 companies, followed by India (70) and the United Kingdom (27). Every transmission system cybersecurity companies list by country and city is linked on this page.
Which city has the most transmission system cybersecurity companies?
London leads with 19 headquartered companies, followed by Dubai (12) and Houston (9).
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 3,920 verified decision-maker contacts tracked across these 792 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.