Company lists · Data refreshed September 2026

Top 25 Web security companies based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 291 companies tracked

RevenueBase identified 291 web security companies headquartered in France as of September 2026 and tracks 7,494 professional contacts across them, including 3,373 with verified work emails. Paris is the largest hub.

This list covers web security 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 14, 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 14, 2026 86% judged on-target in blind review

291Companies

7,494Contacts tracked

3,373Verified emails

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The 25 largest web security companies based in France

Ranked by team size

Top 25 of 291 web security companies based in France, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to web security 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	Orange Cyberdefense	Indirect evidence	Nanterre, FranceHQ checked Sep 14, 2026	1,001-5,000	3,673 contacts →
	Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 14, 2026
2	I-Tracing	Indirect evidence	Courbevoie, FranceHQ checked Sep 14, 2026	1,001-5,000	639 contacts →
	Indirect 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 14, 2026
3	own.security	Indirect evidence	Paris, FranceHQ checked Sep 14, 2026	51-200	506 contacts →
	Indirect 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 14, 2026
4	ADNOV	Indirect evidence	Venelles, FranceHQ checked Sep 14, 2026	201-500	139 contacts →
	Indirect evidence “ADNOV, filiale du groupe ADSN, acteur de renommée française à l'ancrage national, développe depuis plus de 40 ans une expertise reconnue dans la cybersécurité et la protection des…” Source: RevenueBase Database · checked Sep 14, 2026
5	CS In Cybersecurity	Indirect evidence	Le Plessis-robinson, FranceHQ checked Sep 14, 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 14, 2026
6	Aduneo	Indirect evidence	Malakoff, FranceHQ checked Sep 14, 2026	51-200	73 contacts →
	Indirect evidence “Aduneo vous accompagne à chaque étape pour protéger vos identités, sécuriser vos données et simplifier votre quotidien.” Source: RevenueBase Database · checked Sep 14, 2026
7	UBIKA	Indirect evidence	Meudon La Foret, FranceHQ checked Sep 14, 2026	51-200	59 contacts →
	Indirect evidence “Founded in 2001, with headquarters in Meudon, France and a research facility in Montpellier, UBIKA is a European cybersecurity vendor.” Source: RevenueBase Database · checked Sep 14, 2026
8	Dcit Conseil	Indirect evidence	Sene, FranceHQ checked Sep 14, 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 14, 2026
9	Kytl Security	Indirect evidence	Paris, FranceHQ checked Sep 14, 2026	11-50	35 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 14, 2026
10	Excube	Indirect evidence	Lyon, FranceHQ checked Sep 14, 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 14, 2026
11	Randorisec	Partial evidence	Paris, FranceHQ checked Sep 14, 2026	11-50	32 contacts →
	Partial evidence “Cybersecurity company founded by security experts providing the following services: Security audits, Vulnerability research, SecOps, SecArch and Trainings” Source: RevenueBase Database · checked Sep 14, 2026
12	Cogiceo	Partial evidence	Paris, FranceHQ checked Sep 14, 2026	11-50	32 contacts →
	Partial evidence “COGICEO is a company founded in 2012, specializing in IT security audits and penetration testing (pentest).” Source: RevenueBase Database · checked Sep 14, 2026
13	ACE Service	Indirect evidence	Rouen, FranceHQ checked Sep 14, 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 14, 2026
14	Sec-It	Indirect evidence	Levallois-perret, FranceHQ checked Sep 14, 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 14, 2026
15	Five Nines	Indirect evidence	Paris, FranceHQ checked Sep 14, 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 14, 2026
16	Becycure	Indirect evidence	Paris, FranceHQ checked Sep 14, 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 14, 2026
17	Harmonie Technologie Site	Indirect evidence	Paris, FranceHQ checked Sep 14, 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 14, 2026
18	NBS System	Indirect evidence	Champs-sur-marne, FranceHQ checked Sep 14, 2026	11-50	21 contacts →
	Indirect evidence “Pour de nombreuses entreprises, la thématique de la sécurité arrive après compromission.” Source: RevenueBase Database · checked Sep 14, 2026
19	Bluetrusty	Partial evidence	Boulogne-billancourt, FranceHQ checked Sep 14, 2026	11-50	20 contacts →
	Partial evidence “BlueTrusty is the Cyber security practice of ITS Group.” Source: RevenueBase Database · checked Sep 14, 2026
20	Riss-Consulting	Partial evidence	Bry-sur-marne, FranceHQ checked Sep 14, 2026	11-50	17 contacts →
	Partial evidence “Network, Security and Cyber Security Company” Source: RevenueBase Database · checked Sep 14, 2026
21	Sec-Cure	Indirect evidence	Mérignies, FranceHQ checked Sep 14, 2026	11-50	17 contacts →
	Indirect evidence “Sec-Cure est la marque commerciale de DC Communication.” Source: RevenueBase Database · checked Sep 14, 2026
22	V6protect	Partial evidence	Bordeaux, FranceHQ checked Sep 14, 2026	11-50	17 contacts →
	Partial evidence “Web applications are at the heart of business processes.” Source: RevenueBase Database · checked Sep 14, 2026
23	Ého.Link	Indirect evidence	Marseille, FranceHQ checked Sep 14, 2026	11-50	16 contacts →
	Indirect evidence “ÉHO.LINK est une équipe de 25 personnes ancrée à Marseille.” Source: RevenueBase Database · checked Sep 14, 2026
24	Xrator	Indirect evidence	Nantes, FranceHQ checked Sep 14, 2026	11-50	16 contacts →
	Indirect evidence “We tell you where, when and how you will be attacked.” Source: RevenueBase Database · checked Sep 14, 2026
25	Ariovis	Indirect evidence	Châtillon, FranceHQ checked Sep 14, 2026	1-10	16 contacts →
	Indirect evidence “Ariovis est votre partenaire de confiance en cybersécurité.” Source: RevenueBase Database · checked Sep 14, 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: web security 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 web security companies.
Partial evidence: Its own public description names part of web security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name web security 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 291 web security companies based in France

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Web security companies based in France at a glance

As of Sep 14, 2026

45.0%Verified-email coverage

25.8Average contacts per company

1-10Median size (employees)

28.2%Largest-city concentration · Paris

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

205

11-50

51-200

201-500

501-1,000

1,001-5,000

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 291 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 web security 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 “web security 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 web security 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 web security 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, 3,373 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 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.

Web security companies by metro

Web security companies in Paris82

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 web security 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 web security companies are there based in France?

RevenueBase identified 291 web security 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 web security companies?

Paris leads with 82 headquartered companies, followed by Lyon (12) and Toulouse (8).

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 3,373 verified decision-maker contacts tracked across these 291 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 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.