Company lists · Data refreshed September 2026

Top 25 Infrastructure hardening contractors based in France

Name: Infrastructure hardening contractors based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 179 companies tracked

RevenueBase identified 179 infrastructure hardening contractors headquartered in France as of September 2026 and tracks 2,404 professional contacts across them, including 249 with verified work emails. Paris is the largest hub.

This list covers infrastructure hardening contractors 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 17, 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 17, 2026 86% judged on-target in blind review

179Companies

2,404Contacts tracked

249Verified emails

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The 25 largest infrastructure hardening contractors based in France

Ranked by team size

Top 25 of 179 infrastructure hardening contractors based in France, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure hardening contractors: 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	Evabssi	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	201-500	117 contacts →
	Indirect evidence “EvaBssi is an international consulting firm specialized in cybersecurity and IS performance.” Source: RevenueBase Database · checked Sep 17, 2026
2	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 17, 2026	51-200	75 contacts →
	Indirect evidence “Acteur majeur de la cybersécurité, CS Group s'appuie sur ses équipes sont composées d’experts pluridisciplinaires qui offrent à nos clients une vision claire et une capacité…” Source: RevenueBase Database · checked Sep 17, 2026
3	OLIPS	Indirect evidence	Arcueil, FranceHQ checked Sep 17, 2026	51-200	73 contacts →
	Indirect evidence “Créée en avril 2005 à Antony, dans les Hauts de Seine, Notre croissance s’effectue aussi bien dans les domaines de la Grande Distribution, du spectacle vivant ou des collectivités…” Source: RevenueBase Database · checked Sep 17, 2026
4	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 17, 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 17, 2026
5	Ornisec	Indirect evidence	Rennes, FranceHQ checked Sep 17, 2026	11-50	40 contacts →
	Indirect evidence “ORNISEC est un cabinet d’expertise à la pointe de la cybersécurité, qualifié PASSI RGS, PACS et PASSI LPM par l'ANSSI.” Source: RevenueBase Database · checked Sep 17, 2026
6	Excube	Indirect evidence	Lyon, FranceHQ checked Sep 17, 2026	11-50	33 contacts →
	Indirect evidence “Notre positionnement Fondé en 2018, EXCUBE, cabinet-conseil spécialisé en Cybersécurité, délivre ses prestations en s’appuyant sur la connaissance du métier de ses clients…” Source: RevenueBase Database · checked Sep 17, 2026
7	ACE Service	Indirect evidence	Rouen, FranceHQ checked Sep 17, 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 17, 2026
8	Æneas Securite	Indirect evidence	Nanterre, FranceHQ checked Sep 17, 2026	51-200	29 contacts →
	Indirect evidence “Filiale de Æneas Groupe.” Source: RevenueBase Database · checked Sep 17, 2026
9	Certilience	Indirect evidence	Limonest, FranceHQ checked Sep 17, 2026	11-50	26 contacts →
	Indirect evidence “Certilience, Votre sécurité informatique, notre priorité!” Source: RevenueBase Database · checked Sep 17, 2026
10	Kyron Solutions Informatiques	Indirect evidence	Toulouse, FranceHQ checked Sep 17, 2026	11-50	23 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
11	WLF	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	21 contacts →
	Indirect evidence “Conseil en Cybersécurité : Stratégie, Gouvernance, Conformité, Audit et Gestion de crise” Source: RevenueBase Database · checked Sep 17, 2026
12	Polaris ST	Indirect evidence	Saint-priest, FranceHQ checked Sep 17, 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 17, 2026
13	Enigmatic	Indirect evidence	Grenoble, FranceHQ checked Sep 17, 2026	11-50	15 contacts →
	Indirect evidence “Expert en infogérance et maintien en conditions opérationnelles et sécurisées de systèmes et de réseaux.” Source: RevenueBase Database · checked Sep 17, 2026
14	Allistic	Indirect evidence	Lille, FranceHQ checked Sep 17, 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 17, 2026
15	E-Conex	Indirect evidence	Serris, FranceHQ checked Sep 17, 2026	11-50	13 contacts →
	Indirect evidence “E-CONEX est un bureau d’études et de conseils spécialisé dans les domaines de la Sûreté/Sécurité, des Technologies de l’Information et de l’Énergie.” Source: RevenueBase Database · checked Sep 17, 2026
16	Cyberspector	Indirect evidence	Paris & Cotonou, FranceHQ checked Sep 17, 2026	11-50	11 contacts →
	Indirect evidence “CyberSpector SAS is an innovative consulting firm specializing in cybersecurity, domain name management, Internet security, as well as systems and digital project engineering.” Source: RevenueBase Database · checked Sep 17, 2026
17	Netsec Design	Partial evidence	Puteaux, FranceHQ checked Sep 17, 2026	51-200	9 contacts →
	Partial evidence “Netsec Design est une société de conseil spécialisé dans l’infrastructure, la cyber sécurité et le cloud, implanté à la Défense en France et sur Casablanca Finance City au Maroc…” Source: RevenueBase Database · checked Sep 17, 2026
18	Ironie	Indirect evidence	Nantes, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Indirect evidence “You are looking for skills for your security, systems and network projects.” Source: RevenueBase Database · checked Sep 17, 2026
19	Orasys	Indirect evidence	Palaiseau, FranceHQ checked Sep 17, 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 17, 2026
20	Cyber ICS	Partial evidence	Paris, FranceHQ checked Sep 17, 2026	1-10	8 contacts →
	Partial evidence “CYBER ICS is specialized in auditing and securing critical infrastructures.” Source: RevenueBase Database · checked Sep 17, 2026
21	OPSKY	Partial evidence	Levallois-perret, FranceHQ checked Sep 17, 2026	11-50	8 contacts →
	Partial evidence “Dans un écosystème numérique en constante mutation, la résilience des entreprises repose sur une infrastructure agile et une cybersécurité sans faille.” Source: RevenueBase Database · checked Sep 17, 2026
22	Keep Consulting Groupe Rainbow Partners	Partial evidence	Neuilly-sur-seine, FranceHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “Pure-player du conseil en cybersécurité, gestion des risques IT et infrastructures, notre force se résume par la flexibilité et l’autonomie de notre structure au sein d’un groupe…” Source: RevenueBase Database · checked Sep 17, 2026
23	Gen&sis	Indirect evidence	Puteaux, FranceHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “GEN & SIS, a consulting company dedicated to Cybersecurity, supports you in securing your information system through its services” Source: RevenueBase Database · checked Sep 17, 2026
24	Solarisq	Indirect evidence	Sautron, FranceHQ checked Sep 17, 2026	1-10	6 contacts →
	Indirect evidence “Cabinet de Conseil et Ingénierie en Sûreté Diagnostics de sûreté - Formations - Assistance à maîtrise d'ouvrage - Plan de sûreté” Source: RevenueBase Database · checked Sep 17, 2026
25	Leviam	Indirect evidence	Paris, FranceHQ checked Sep 17, 2026	11-50	5 contacts →
	Indirect evidence “Leviam est un cabinet de conseil spécialisé dans la cybersécurité.” Source: RevenueBase Database · checked Sep 17, 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 hardening contractors. 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 hardening contractors.
Partial evidence: Its own public description names part of infrastructure hardening contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure hardening contractors. 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 179 infrastructure hardening contractors based in France

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Infrastructure hardening contractors based in France at a glance

As of Sep 17, 2026

10.4%Verified-email coverage

13.4Average contacts per company

1-10Median size (employees)

29.6%Largest-city concentration · Paris

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

112

11-50

51-200

201-500

1,001-5,000

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 179 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 hardening contractors, 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 hardening contractors”. 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 hardening contractors), 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 hardening contractors, 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, 249 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 17, 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 hardening contractors by metro

Infrastructure hardening contractors in Paris53

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 hardening contractors, 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 hardening contractors are there based in France?

RevenueBase identified 179 infrastructure hardening contractors 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?

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

Which city has the most infrastructure hardening contractors?

Paris leads with 53 headquartered companies, followed by Lyon (9) and Boulogne-Billancourt (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 249 verified decision-maker contacts tracked across these 179 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 17, 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.