Company lists · Data refreshed September 2026

Top 25 Cybersecurity energy companies based in France

Name: Cybersecurity energy companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 72 companies tracked

RevenueBase identified 72 cybersecurity energy companies headquartered in France as of September 2026 and tracks 922 professional contacts across them, including 202 with verified work emails. Paris is the largest hub.

This list covers cybersecurity energy companies headquartered in France, 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 28, 2026.

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 28, 2026 86% judged on-target in blind review

72Companies

922Contacts tracked

202Verified emails

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The 25 largest cybersecurity energy companies based in France

Ranked by team size

Top 25 of 72 cybersecurity energy companies based in France, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity energy 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	Itrust	Partial evidence	Toulouse, FranceHQ checked Sep 28, 2026	51-200	126 contacts →
	Partial evidence “Since January 2007, ITrust has been offering cybersecurity solutions and expertise in 6 different countries on the European market.” Source: RevenueBase Database · checked Sep 28, 2026
2	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 28, 2026	n/a	47 contacts →
	Indirect evidence “DCIT Conseil, société de services de consultation spécialisée dans la cybersécurité et les technologies de l'information.” Source: RevenueBase Database · checked Sep 28, 2026
3	Adenis	Indirect evidence	Bagnolet, FranceHQ checked Sep 28, 2026	51-200	42 contacts →
	Indirect evidence “Les entreprises qui domineront leur marché dans les dix prochaines années auront toutes un point commun : un système d'information devenu un avantage stratégique.” Source: RevenueBase Database · checked Sep 28, 2026
4	ACG Cybersecurity	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	33 contacts →
	Partial evidence “ACG Cybersecurity est un cabinet d’Audit, de Conseil et de Gouvernance spécialisé en matière de Cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
5	Sec-It	Indirect evidence	Levallois-perret, FranceHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “SEC-IT, filiale du groupe MCA, est le partenaire de référence en cybersécurité, combinant expertise en audit conseil, sécurité opérationnelle et formation pour accompagner les…” Source: RevenueBase Database · checked Sep 28, 2026
6	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	25 contacts →
	Indirect evidence “Five Nines est née en 2019 d’un constat simple, celui d’un manque crucial de compétences et d’expérience dans la sécurisation de la transformation digitale des entreprises.” Source: RevenueBase Database · checked Sep 28, 2026
7	Holiseum	Partial evidence	Puteaux, FranceHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Holiseum offers a holistic approach of cybersecurity by: • providing services across the whole cybersecurity service value chain: from governance, audits, solutions, remediation…” Source: RevenueBase Database · checked Sep 28, 2026
8	Becycure	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “Nous sommes une entreprise résolument orientée vers les services liés au domaine de la Cybersécurité.” Source: RevenueBase Database · checked Sep 28, 2026
9	NBS System	Indirect evidence	Champs-sur-marne, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Indirect evidence “Pour de nombreuses entreprises, la thématique de la sécurité arrive après compromission.” Source: RevenueBase Database · checked Sep 28, 2026
10	Allistic	Indirect evidence	Lille, FranceHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “QUI NOUS SOMMES Allistic est un cabinet de conseil en cybersécurité spécialisé dans l'accompagnement des retailers, acteurs de la santé et industriels.” Source: RevenueBase Database · checked Sep 28, 2026
11	Apsecurity	Indirect evidence	Charleville-mézières, FranceHQ checked Sep 28, 2026	1-10	10 contacts →
	Indirect evidence “APSecurity, une entreprise spécialisée en cybersécurité implantée dans les Ardennes, propose son expertise et un accompagnement dédié pour sécuriser les données numériques de…” Source: RevenueBase Database · checked Sep 28, 2026
12	Internet Of Trust	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Founded in February 2014, Internet of Trust is an independent security consulting company based in Paris and in Marseille area.” Source: RevenueBase Database · checked Sep 28, 2026
13	Limon IT	Indirect evidence	Saint-étienne, FranceHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
14	Maguen Cyber	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	7 contacts →
	Indirect evidence “Maguen Cyber was created to provide its clients with the right security services.” Source: RevenueBase Database · checked Sep 28, 2026
15	resilium.ai	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “Resilience is a State of Mind Élever la Cybersécurité des PME/ETI Resilium transforme votre cybersécurité en un atout puissant.” Source: RevenueBase Database · checked Sep 28, 2026
16	WELAN	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “WELAN est une société de conseil en cybersécurité qui accompagne les entreprises de toutes tailles désireuses de se protéger contre les menaces numériques croissantes.” Source: RevenueBase Database · checked Sep 28, 2026
17	Anguis	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Chez Anguis, nous sommes bien plus qu'une entreprise de sécurité informatique : nous sommes des architectes de la confiance numérique.” Source: RevenueBase Database · checked Sep 28, 2026
18	Fortress Cybersecurity	Partial evidence	Issy-les-moulineaux, FranceHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Fortress Cybersecurity a vocation à couvrir l’ensemble des besoins en cybersécurité des entreprises qui disposent ou opèrent des installations industrielles.” Source: RevenueBase Database · checked Sep 28, 2026
19	Cyberevive	Indirect evidence	Lille, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “We detect vulnerabilities, identify the most important assets, prioritize the most serious breaches, decide what actions to take, mitigate and control compliances and protect…” Source: RevenueBase Database · checked Sep 28, 2026
20	MA Cyber	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “MA Cyber vous accompagne dans la sécurisation de votre système d'information.” Source: RevenueBase Database · checked Sep 28, 2026
21	Citéconnect	Indirect evidence	Carcassonne, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “CitéConnect est une entreprise spécialisée dans la cybersécurité et l'informatique : suite collaborative, IT, cloud, IoT, IA!” Source: RevenueBase Database · checked Sep 28, 2026
22	Esentive	Indirect evidence	75017, FranceHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “Cybersécurité, gouvernance et renfort d’experts ESENTIVE accompagne les organisations publiques et privées dans leurs enjeux de cybersécurité, de gouvernance et de sécurisation…” Source: RevenueBase Database · checked Sep 28, 2026
23	Exohsi	Indirect evidence	Grenoble, FranceHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Le dragon qui veille sur votre trésor numérique Dans un monde où les données sont des joyaux précieux, EXOHSI se dresse contre l’ennemi, ce dernier, prêt à tout pour vous voler…” Source: RevenueBase Database · checked Sep 28, 2026
24	Cyber Consult Bonnefoi	Indirect evidence	Rueil-malmaison, FranceHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Prestations et conseil en cybersécurité” Source: RevenueBase Database · checked Sep 28, 2026
25	rootsec.eu	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Protecting your data from the most severe threats begins with a disciplined approach to securing your entire information technology infrastructure.” Source: RevenueBase Database · checked Sep 28, 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 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 companies.
Partial evidence: Its own public description names part of cybersecurity energy 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 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 72 cybersecurity energy companies based in France

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Cybersecurity energy companies based in France at a glance

As of Sep 28, 2026

21.9%Verified-email coverage

12.8Average contacts per company

1-10Median size (employees)

27.8%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 72 companies.

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 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.
What qualifies: Companies headquartered in France whose own description of what they do matches “cybersecurity energy 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 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 companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
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, 202 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 28, 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.

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 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 companies are there based in France?

RevenueBase identified 72 cybersecurity energy companies headquartered in France 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?

Itrust, headquartered in Toulouse, tops this list with the largest team on record.

Which city has the most cybersecurity energy companies?

Paris leads with 20 headquartered companies, followed by Lyon (3) and Toulouse (3).

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 202 verified decision-maker contacts tracked across these 72 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 28, 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.