Company lists · Data verified August 2026

Top 25 Cybersecurity firms based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,142 companies tracked

There are 1,142 cybersecurity firms headquartered in France (RevenueBase, August 2026). RevenueBase tracks 15,380 professional contacts across them, including 4,761 with verified work emails and 496 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity firms headquartered in France, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

1,142Companies

15,380Contacts tracked

4,761Verified emails

496Mobile numbers

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The 25 largest cybersecurity firms based in France

Ranked by team size

Top 25 of 1,142 cybersecurity firms based in France, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	I-Tracing	Courbevoie	1,001-5,000	643	394
2	own.security	Rennes	51-200	506	26
3	Eryma Security Systems	Issy-Les-Moulineaux	201-500	462	211
4	Trackforce	Maisons	201-500	400	164
5	Devoteam Cyber Trust	Levallois-Perret	10001+	342	145
6	Formind	Issy-Les-Moulineaux	201-500	252	136
7	Airbus Defence And Space Cyber	Elancourt	501-1,000	223	133
8	Synacktiv	Toulouse	51-200	170	125
9	Filigran	Paris	201-500	167	109
10	Cybelangel	Clichy	51-200	161	97
11	Services Network Security	Montpellier	201-500	145	83
12	ADNOV	n/a	201-500	139	67
13	Itrust	Toulouse	51-200	126	76
14	Harfanglab	Paris	51-200	119	83
15	XMCO	Labege	51-200	112	4
16	Egerie	Paris	51-200	110	50
17	Quarkslab	Paris	51-200	94	45
18	Exclusive Networks France	Boulogne Billancourt	51-200	93	62
19	Devensys Cybersecurity	Suresnes	51-200	91	59
20	Sekera	Saint-Quentin-En-Yvelines	51-200	86	28
21	Magellan Sécurité	Romilly-Sur-Seine	51-200	76	33
22	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
23	Aduneo	Malakoff	51-200	73	36
24	Eset France	Marne-La-Vallee	51-200	71	1
25	Strangebee	Paris	51-200	66	42

Showing 25 of 1,142 cybersecurity firms based in France

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Cybersecurity firms based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 349 HQs

496Contacts with mobile numbers

7Emails re-verified in last 30 days

Companies by employee count

1-10

771

11-50

264

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity firms by metro

Metro	Companies
Cybersecurity firms in Paris	349
Cybersecurity firms in Lyon	36
Cybersecurity firms in Toulouse	26
Cybersecurity firms in Lille	17
Cybersecurity firms in Rennes	17
Cybersecurity firms in Boulogne-Billancourt	14
Cybersecurity firms in Bordeaux	14

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “cybersecurity firms”, with match quality audited by blind human judging, and headquartered in France.
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: Contact records re-verify on a rolling cadence; 7 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cybersecurity firms are there based in France?

There are 1,142 cybersecurity firms headquartered in France as of August 2026 (RevenueBase).

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 firms?

Paris leads with 349 headquartered companies, followed by Lyon (36) and Toulouse (26).

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 4,761 verified decision-maker contacts tracked across these 1,142 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.