Company lists · Data refreshed September 2026

Top 25 Infrastructure security audit companies based in France

Name: Infrastructure security audit 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 160 companies tracked

RevenueBase identified 160 infrastructure security audit companies headquartered in France as of September 2026 and tracks 1,519 professional contacts across them, including 250 with verified work emails. Paris is the largest hub.

This list covers infrastructure security audit 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

160Companies

1,519Contacts tracked

250Verified emails

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The 25 largest infrastructure security audit companies based in France

Ranked by team size

Top 25 of 160 infrastructure security audit 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 infrastructure security audit 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	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
2	Securite Consultants	Indirect evidence	Issy Les Moulineaux, FranceHQ checked Sep 28, 2026	51-200	46 contacts →
	Indirect evidence “Depuis 1994, auditer, concevoir, installer et maintenir des systèmes de sécurité incendie et de sûreté électronique est notre métier.” Source: RevenueBase Database · checked Sep 28, 2026
3	digital.security	Partial evidence	Bezons, FranceHQ checked Sep 28, 2026	201-500	44 contacts →
	Partial evidence “Founded in 2015 by a group of IT security experts with the support of the Econocom Group, digital.security (~ 230 experts) aims to offer companies and government organisations…” Source: RevenueBase Database · checked Sep 28, 2026
4	By The WAY	Partial evidence	Vendeville, FranceHQ checked Sep 28, 2026	11-50	41 contacts →
	Partial evidence “Services aux entreprises dans différents domaines des infrastructures informatique.” Source: RevenueBase Database · checked Sep 28, 2026
5	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
6	Randorisec	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	32 contacts →
	Strong evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 28, 2026
7	Cogiceo	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	32 contacts →
	Strong evidence “COGICEO is a company founded in 2012, specializing in IT security audits and penetration testing (pentest).” Source: RevenueBase Database · checked Sep 28, 2026
8	ACE Service	Indirect evidence	Rouen, FranceHQ checked Sep 28, 2026	11-50	30 contacts →
	Indirect evidence “Fondée en 2001, ACE Service concentre son activité sur son savoir-faire : la sécurité des systèmes d'information.” Source: RevenueBase Database · checked Sep 28, 2026
9	Sec-It	Partial evidence	Levallois-perret, FranceHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial 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
10	Certilience	Indirect evidence	Limonest, FranceHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Certilience, Votre sécurité informatique, notre priorité!” Source: RevenueBase Database · checked Sep 28, 2026
11	Harmonie Technologie Site	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	51-200	21 contacts →
	Indirect evidence “As the main independent provider of cybersecurity and risk management consulting and technical expertise, Harmonie Technologie partners with key accounts (mainly from CAC40 and…” Source: RevenueBase Database · checked Sep 28, 2026
12	Eyacom	Partial evidence	Montrouge, FranceHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “EYACOM is dedicated to delivering top-tier security services to its clients within the IT sector.” Source: RevenueBase Database · checked Sep 28, 2026
13	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
14	ITQ Security	Partial evidence	Lognes, FranceHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “EXPERTS SECURITE Notre priorité votre sécurité!” Source: RevenueBase Database · checked Sep 28, 2026
15	Opsynet	Partial evidence	Créteil, FranceHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Créé en 2018, la forte expertise de ses collaborateurs dans le domaine Réseaux et Sécurité des infrastructures en fait un partenaire privilégié dans l'accompagnement des clients…” Source: RevenueBase Database · checked Sep 28, 2026
16	Polaris ST	Indirect evidence	Saint-priest, FranceHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Fondée en 2010, Polaris Secure Technologies est une société de conseil spécialisée dans la sécurité des systèmes d’information.” Source: RevenueBase Database · checked Sep 28, 2026
17	Intuity	Indirect evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Nous aidons les entreprises à sécuriser leurs actifs, tels que leurs applications web et leurs systèmes d'information, tout en renforçant la sécurité globale des organisations.” Source: RevenueBase Database · checked Sep 28, 2026
18	Vaadata	Partial evidence	Lyon, FranceHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “We support organisations of all sizes and across all sectors with - penetration testing on all types of targets (web and mobile apps, infrastructure, networks, cloud, IoT, etc.)-…” Source: RevenueBase Database · checked Sep 28, 2026
19	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
20	Iriguard	Indirect evidence	Puteaux, FranceHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “L'évolution constante des usages numériques et des actes malveillants en découlant ont engendré un besoin toujours plus important en matière de protection des systèmes…” Source: RevenueBase Database · checked Sep 28, 2026
21	Skillx	Indirect evidence	Lille, FranceHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “SkillX accompagne les PME et ETI et grands groupes dans la sécurisation concrète de leur système d’information, de l’identification des failles jusqu’à leur remédiation.” Source: RevenueBase Database · checked Sep 28, 2026
22	ASTAR	Indirect evidence	Toulouse, FranceHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Société spécialisée en sécurité des systèmes d'information.” Source: RevenueBase Database · checked Sep 28, 2026
23	Kamea Security	Partial evidence	Paris, FranceHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Our services- Pentest / cybersecurity audit - Red Team as a Service - CISO as a Service - Risk Assessment” Source: RevenueBase Database · checked Sep 28, 2026
24	Orasys	Indirect evidence	Palaiseau, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Indirect evidence “Société de conseil en Sécurité de l'Information, ORASYS accompagne ses clients pour - Formaliser et piloter leurs plans d'action de sécurité- Estimer et évaluer leurs risques…” Source: RevenueBase Database · checked Sep 28, 2026
25	Cyber ICS	Strong evidence	Paris, FranceHQ checked Sep 28, 2026	1-10	8 contacts →
	Strong evidence “CYBER ICS is specialized in auditing and securing critical infrastructures.” 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: infrastructure security audit 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 infrastructure security audit companies.
Partial evidence: Its own public description names part of infrastructure security audit companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure security audit 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 160 infrastructure security audit companies based in France

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Infrastructure security audit companies based in France at a glance

As of Sep 28, 2026

16.5%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

26.2%Largest-city concentration · Paris

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

112

11-50

51-200

201-500

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 160 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 infrastructure security audit 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 “infrastructure security audit 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 infrastructure security audit 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 infrastructure security audit 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, 250 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.

Infrastructure security audit companies by metro

Infrastructure security audit companies in Paris42

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 infrastructure security audit 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 infrastructure security audit companies are there based in France?

RevenueBase identified 160 infrastructure security audit 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?

Dcit Conseil, headquartered in Sene, tops this list with the largest team on record.

Which city has the most infrastructure security audit companies?

Paris leads with 42 headquartered companies, followed by Lyon (6) and Toulouse (6).

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 250 verified decision-maker contacts tracked across these 160 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.