Company lists · Data refreshed September 2026

Top 16 Utility grid cybersecurity companies based in France

RevenueBase identified 46 utility grid cybersecurity companies headquartered in France as of September 2026 and tracks 5,025 professional contacts across them, including 2,306 with verified work emails. Paris is the largest hub.

This list covers utility grid cybersecurity 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 29, 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 29, 2026 86% judged on-target in blind review
46Companies
5,025Contacts tracked
2,306Verified emails
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The 16 largest utility grid cybersecurity companies based in France

Ranked by team size
Top 16 of 46 utility grid cybersecurity companies based in France, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to utility grid cybersecurity 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
1Partial evidenceNanterre, FranceHQ checked Sep 29, 20261,001-5,0003,673 contacts →

Partial evidence

“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceParis, FranceHQ checked Sep 29, 202651-200138 contacts →

Indirect evidence

“European leader in intrusion detection and advanced threat detection, Gatewatcher has been protecting the critical networks of large companies as well as public institutions since…”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceToulouse, FranceHQ checked Sep 29, 202651-200126 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 29, 2026
4Indirect evidenceParis, FranceHQ checked Sep 29, 202611-5035 contacts →

Indirect evidence

“KYTL | Spécialiste de la protection des données et des environnements critiques; Fondée par des experts en cybersécurité cumulant plus de 15 ans d’expérience, KYTL accompagne les…”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceParis, FranceHQ checked Sep 29, 202611-5031 contacts →

Indirect evidence

“French start-up Artifeel's mission is to enable infrastructure operators to ensure the continuity and availability of their services (telecoms, energy, water, gas, rail networks…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceParis, FranceHQ checked Sep 29, 202611-5025 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 29, 2026
7Indirect evidenceToulouse, FranceHQ checked Sep 29, 202611-5023 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidencePérols, FranceHQ checked Sep 29, 202611-5020 contacts →

Indirect evidence

“As France's leading provider of cyber protection for critical systems, Seclab secures exchanges by simplifying interconnection architectures and eliminating the risks associated…”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceMarseille, FranceHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“ÉHO.LINK est une équipe de 25 personnes ancrée à Marseille.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceParis, FranceHQ checked Sep 29, 202611-5011 contacts →

Indirect evidence

“Expert en sécurité et défense des systèmes numériques, nous accompagnons les entreprises et les organismes publics dans la protection de leurs infrastructures et de leurs produits…”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceParis, FranceHQ checked Sep 29, 20261-1010 contacts →

Indirect evidence

“Chez High Jack, nous sommes bien plus que des accompagnateurs de digitalisation, nous sommes des catalyseurs de la transformation numérique de votre structure!”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceParis, FranceHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“For 10 years we have supported our clients in protecting their information assets: SIEM / SOC / SOAR; Threat Intelligence / UBA / IAM / API Security”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceIssy-les-moulineaux, FranceHQ checked Sep 29, 20261-104 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 29, 2026
14Indirect evidenceCarcassonne, FranceHQ checked Sep 29, 20261-103 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 29, 2026
15Indirect evidenceGrenoble, FranceHQ checked Sep 29, 20261-102 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 29, 2026
16Partial evidenceMontpellier, FranceHQ checked Sep 29, 202611-501 contacts →

Partial evidence

“Forequest Technologies is a Premier end-to-end Cybersecurity, Data Science, and Digitalization solutions provider.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 16 of 46 utility grid cybersecurity companies based in France

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Utility grid cybersecurity companies based in France at a glance

As of Sep 29, 2026
45.9%Verified-email coverage
109.2Average contacts per company
11-50Median size (employees)
37.0%Largest-city concentration · Paris
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
16
51-200
4
201-500
1
1,001-5,000
3
10001+
1

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 46 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 utility grid 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.
What qualifies
Companies headquartered in France whose own description of what they do matches “utility grid 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 utility grid 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 utility grid cybersecurity 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, 2,306 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.

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 utility grid 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 utility grid cybersecurity companies are there based in France?

RevenueBase identified 46 utility grid cybersecurity 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?

Orange Cyberdefense, headquartered in Paris, tops this list with the largest team on record.

Which city has the most utility grid cybersecurity companies?

Paris leads with 17 headquartered companies, followed by Caen (2) and Issy-Les-Moulineaux (2).

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 2,306 verified decision-maker contacts tracked across these 46 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.