Company lists · Data refreshed September 2026

Top 25 Cybersecurity energy sector companies worldwide

Name: Cybersecurity energy sector companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 2,018 companies tracked

RevenueBase identified 2,018 cybersecurity energy sector companies worldwide as of September 2026 and tracks 30,109 professional contacts across them, including 9,863 with verified work emails and 4,688 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers cybersecurity energy sector 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 1, 2026. Country and city lists for cybersecurity energy sector 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

2,018Companies

30,109Contacts tracked

9,863Verified emails

4,688Mobile numbers

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The 25 largest cybersecurity energy sector companies worldwide

Ranked by team size

Top 25 of 2,018 cybersecurity energy sector companies worldwide, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity energy sector 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Guidepoint Security	Partial evidence	Tampa, FL, US	1,001-5,000	1,234 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 1, 2026
2	I-Tracing	Partial evidence	Courbevoie, FR	1,001-5,000	643 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
3	Dragos, INC	Partial evidence	Houston, TX, US	501-1,000	544 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 1, 2026
4	own.security	Partial evidence	Rennes, FR	51-200	506 contacts →
	Partial evidence “Founded in 2008, OWN is a Pure Player in cybersecurity, with offices in Paris, Rennes and Toulouse, but with a presence throughout France with its fully remote employees.” Source: RevenueBase Database · checked Sep 1, 2026
5	Sirar By STC	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 1, 2026	201-500	493 contacts →
	Indirect evidence “World-class leading edge cyber capabilities to enable and protect economic and physical critical infrastructure and government services.” Source: RevenueBase Database · checked Sep 1, 2026
6	Securityhq	Partial evidence	New York, NY, US	501-1,000	492 contacts →
	Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 1, 2026
7	Protechmanize	Partial evidence	Thane, IndiaHQ checked Sep 1, 2026	501-1,000	484 contacts →
	Partial 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 1, 2026
8	Safeway	Indirect evidence	Rio De Janeiro, BR	201-500	397 contacts →
	Indirect evidence “A SAFEWAY empresa que integra a plataforma de cibersegurança do Grupo Stefanini se une a Protega.” Source: RevenueBase Database · checked Sep 1, 2026
9	G Data Cyberdefense	Indirect evidence	Bochum, DE	501-1,000	389 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 1, 2026
10	PT Itsec Asia TBK	Partial evidence	Melbourne, AU	201-500	387 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 1, 2026
11	Nozomi Networks	Indirect evidence	Milan, IT	201-500	371 contacts →
	Indirect evidence “We protect the world’s critical infrastructure from cyber threats.” Source: RevenueBase Database · checked Sep 1, 2026
12	Telekom Security	Indirect evidence	Bonn, DE	1,001-5,000	360 contacts →
	Indirect evidence “We believe in a secure digital future with minimal risk and maximum opportunities.” Source: RevenueBase Database · checked Sep 1, 2026
13	Mnemonic	Partial evidence	Redwood City, CA, US	201-500	345 contacts →
	Partial evidence “With offices in Oslo, Stavanger, Trondheim, Stockholm, Copenhagen, Utrecht and London, we deliver cybersecurity services across Europe.” Source: RevenueBase Database · checked Sep 1, 2026
14	Amsys Innovative Solutions	Indirect evidence	Houston, TX, US	201-500	311 contacts →
	Indirect evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Sep 1, 2026
15	Bridewell	Indirect evidence	Edinburgh, GB	201-500	304 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
16	Lumifi	Indirect evidence	Scottsdale, AZ, US	51-200	247 contacts →
	Indirect evidence “Lumifi Cyber helps organizations illuminate their cyber defense with continuous protection across the full security lifecycle.” Source: RevenueBase Database · checked Sep 1, 2026
17	Cyberani By Aramco Digital	Indirect evidence	Riyadh, Saudi ArabiaHQ checked Sep 1, 2026	201-500	241 contacts →
	Indirect evidence “Cyberani is an Aramco Digital company that is dedicated to safeguarding the digital frontiers of industry leaders and government agencies.” Source: RevenueBase Database · checked Sep 1, 2026
18	Fox-It	Indirect evidence	Gk, NL	201-500	237 contacts →
	Indirect evidence “Fox-IT prevents, solves and mitigates the most serious cyber threats with innovative solutions for government, defense, law enforcement, critical infrastructure, banking, and…” Source: RevenueBase Database · checked Sep 1, 2026
19	Cyber1 Solutions	Indirect evidence	Sandton, ZA	51-200	235 contacts →
	Indirect evidence “CYBER1 Solutions is a Cyber Security specialist operating in Southern Africa, East & West Africa, Dubai and EMEA.” Source: RevenueBase Database · checked Sep 1, 2026
20	Netdata Cybersecurity	Partial evidence	Miami, FL, US	201-500	209 contacts →
	Partial 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 1, 2026
21	S21sec	Partial evidence	Madrid, ES	201-500	192 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 1, 2026
22	Safeaeon INC	Partial evidence	Charlottetown, PE, CA	51-200	188 contacts →
	Partial evidence “SafeAeon leads the industry as a top-tier Cybersecurity-as-a-Service provider, delivering 24x7 premium Managed Security Services with AI-powered and human-driven 24x7 SOC…” Source: RevenueBase Database · checked Sep 1, 2026
23	Deepseas	Indirect evidence	US	201-500	185 contacts →
	Indirect evidence “With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…” Source: RevenueBase Database · checked Sep 1, 2026
24	Cyberfort	Indirect evidence	Thatcham, GB	51-200	160 contacts →
	Indirect evidence “At Cyberfort we are passionate about the cyber security services we deliver for our customers which keeps their people, data, systems and technology infrastructure secure…” Source: RevenueBase Database · checked Sep 1, 2026
25	Nuharbor Security	Partial evidence	Boston, MA, US	51-200	149 contacts →
	Partial evidence “NuHarbor Security is a leading national cybersecurity services firm, supporting the diverse needs of hundreds of clients with clear, comprehensive, and outcome-based solutions.” Source: RevenueBase Database · checked Sep 1, 2026

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: cybersecurity energy sector 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 cybersecurity energy sector companies.
Partial evidence: Its own public description names part of cybersecurity energy sector companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity energy sector 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 2,018 cybersecurity energy sector companies worldwide

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Cybersecurity energy sector companies worldwide at a glance

As of Sep 1, 2026

32.8%Verified-email coverage

15.6%Mobile-number coverage

14.9Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · London

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

1,005

11-50

736

51-200

190

201-500

501-1,000

1,001-5,000

10001+

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 cybersecurity energy sector 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: 19 countries, largest first: the United States, India, the United Kingdom, France, Australia, Canada, Brazil, the United Arab Emirates, Germany, Spain and 9 more. Country and city lists for cybersecurity energy sector companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity energy sector 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 cybersecurity energy sector 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 cybersecurity energy sector 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, 9,863 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 1, 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.

Cybersecurity energy sector companies by location

20 lists · largest first

Every Cybersecurity energy sector companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Cybersecurity energy sector companies based in London, United Kingdom52

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 cybersecurity energy sector 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 cybersecurity energy sector companies are there worldwide?

RevenueBase identified 2,018 cybersecurity energy sector 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?

Guidepoint Security, headquartered in Tampa, tops this list with the largest team on record.

Which country has the most cybersecurity energy sector companies?

The United States leads with 717 companies, followed by India (237) and the United Kingdom (173). Every cybersecurity energy sector companies list by country and city is linked on this page.

Which city has the most cybersecurity energy sector companies?

London leads with 72 headquartered companies, followed by Dubai (36) and Paris (35).

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 9,863 verified decision-maker contacts tracked across these 2,018 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 1, 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.