Company lists · Data refreshed September 2026

Top 25 Cybersecurity law firms based in France

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 345 companies tracked

RevenueBase identified 345 cybersecurity law firms headquartered in France as of September 2026 and tracks 3,493 professional contacts across them, including 1,188 with verified work emails and 56 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity law firms 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

345Companies

3,493Contacts tracked

1,188Verified emails

56Mobile numbers

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The 25 largest cybersecurity law firms based in France

Ranked by team size

Top 25 of 345 cybersecurity law firms based in France, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity law firms: 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	I-Tracing	Partial evidence	Courbevoie, France	1,001-5,000	643 contacts →
	Partial 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 1, 2026
2	own.security	Partial evidence	Rennes, France	51-200	506 contacts →
	Partial 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 1, 2026
3	ADNOV	Indirect evidence	France	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 1, 2026
4	Egerie	Partial evidence	Paris, France	51-200	110 contacts →
	Partial evidence “At Egerie, we believe cybersecurity shouldn't be a constraint, it should be a true driver of sustainable performance.” Source: RevenueBase Database · checked Sep 1, 2026
5	Lexing Avocats	Indirect evidence	Paris, France	51-200	86 contacts →
	Indirect evidence “Cabinet d'avocats dédié au droit des technologies depuis sa création en 1978.” Source: RevenueBase Database · checked Sep 1, 2026
6	CS In Cybersecurity	Indirect evidence	Le Plessis-Robinson, France	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 1, 2026
7	Cyberlift	Indirect evidence	Paris, France	51-200	55 contacts →
	Indirect evidence “Cyberlift, l'excellence et l'engagement, au service de votre cybersécurité.” Source: RevenueBase Database · checked Sep 1, 2026
8	Techso Group	Indirect evidence	Paris, France	51-200	54 contacts →
	Indirect evidence “TECHSO GROUP est un cabinet international spécialisé en cybersécurité, intervenant auprès d’institutions financières, d’organisations publiques et d’opérateurs d’infrastructures…” Source: RevenueBase Database · checked Sep 1, 2026
9	AISI	Indirect evidence	Montpellier, France	51-200	50 contacts →
	Indirect evidence “Qui sommes-nous?” Source: RevenueBase Database · checked Sep 1, 2026
10	Derriennic Associés	Indirect evidence	Paris, France	11-50	42 contacts →
	Indirect evidence “Cabinet d'avocats de droit des affaires et nouvelles technologies : =>"Acteur de référence dans les technologies de l’information et de la communication depuis plus de trente ans…” Source: RevenueBase Database · checked Sep 1, 2026
11	Ornisec	Indirect evidence	Rennes, France	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 1, 2026
12	Digitemis	Indirect evidence	Angers, France	11-50	38 contacts →
	Indirect evidence “Digitemis est expert dans le conseil en cybersécurité et protection des données personnelles.” Source: RevenueBase Database · checked Sep 1, 2026
13	Haas Avocats	Partial evidence	Paris, France	11-50	37 contacts →
	Partial evidence “Haas Avocats is a law firm specializing in new technologies, digital and intellectual property law.” Source: RevenueBase Database · checked Sep 1, 2026
14	ACG Cybersecurity	Partial evidence	Paris, France	11-50	34 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 1, 2026
15	Kytl Security	Indirect evidence	Paris, France	11-50	34 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 1, 2026
16	Excube	Indirect evidence	Lyon, France	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 1, 2026
17	Bsecure	Indirect evidence	Paris, France	51-200	33 contacts →
	Indirect evidence “Bsecure est un cabinet d'expertise en cybersécurité 100% français, fondé en 2009, et détenu en fonds propres par ses dirigeants.” Source: RevenueBase Database · checked Sep 1, 2026
18	Randorisec	Partial evidence	Paris, France	11-50	31 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 1, 2026
19	protected.eu	Indirect evidence	Paris, France	51-200	29 contacts →
	Indirect evidence “Dans un monde où le digital imprègne chaque aspect de nos vies, les risques numériques ne sont plus une menace abstraite.” Source: RevenueBase Database · checked Sep 1, 2026
20	Abakus Sécurité	Indirect evidence	Paris, France	11-50	29 contacts →
	Indirect evidence “Expertise en cybersécurité - Abakus Sécurité vous accompagne sur l'ensemble du cycle de vie de vos projets en cybersécurité.” Source: RevenueBase Database · checked Sep 1, 2026
21	Cybermaker	Indirect evidence	Saint Cloud, France	11-50	26 contacts →
	Indirect evidence “CyberMaker – Sécuriser les entreprises, former les experts CyberMaker est né d’un constat : la cybersécurité souffre d’une pénurie critique de talents.” Source: RevenueBase Database · checked Sep 1, 2026
22	Sec-It	Indirect evidence	Aix-En-Provence, France	11-50	26 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 1, 2026
23	Five Nines	Indirect evidence	Paris, France	11-50	26 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 1, 2026
24	Cyberdian Groupe	Indirect evidence	France	11-50	26 contacts →
	Indirect evidence “Créé en janvier 2017, Cyberdian est un cabinet de conseil en cybersécurité spécialisé dans l'accompagnement, l'analyse des risques, la stratégie et la mise en œuvre des moyens…” Source: RevenueBase Database · checked Sep 1, 2026
25	Agil'it	Indirect evidence	Paris, France	11-50	25 contacts →
	Indirect evidence “Avocats, innovants et résolument AGIL'IT!” Source: RevenueBase Database · checked Sep 1, 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 law firms. 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 law firms.
Partial evidence: Its own public description names part of cybersecurity law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity law firms. 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 345 cybersecurity law firms based in France

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Cybersecurity law firms based in France at a glance

As of Sep 1, 2026

34.0%Verified-email coverage

1.6%Mobile-number coverage

10.1Average contacts per company

1-10Median size (employees)

42.3%Largest-city concentration · Paris

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

265

11-50

51-200

201-500

1,001-5,000

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 law firms, 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 law firms”. 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 law firms), 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 law firms, 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, 1,188 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 1, 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.

Cybersecurity law firms by metro

Cybersecurity law firms in Paris146

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 law firms, 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 law firms are there based in France?

RevenueBase identified 345 cybersecurity law firms 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?

I-Tracing, headquartered in Courbevoie, tops this list with the largest team on record.

Which city has the most cybersecurity law firms?

Paris leads with 146 headquartered companies, followed by Lyon (14) and Rennes (10).

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 1,188 verified decision-maker contacts tracked across these 345 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 1, 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.