Company lists · Data verified August 2026

Top 25 Cybersecurity services companies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 904 companies tracked

There are 904 cybersecurity services companies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 11,778 professional contacts across them, including 3,488 with verified work emails and 294 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity services companies 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.

904Companies

11,778Contacts tracked

3,488Verified emails

294Mobile numbers

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The 25 largest cybersecurity services companies based in France

Ranked by team size

Top 25 of 904 cybersecurity services companies 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	Devoteam Cyber Trust	Levallois-Perret	10001+	342	145
4	Formind	Issy-Les-Moulineaux	201-500	252	136
5	Intrinsec	Courbevoie	201-500	247	140
6	Airbus Defence And Space Cyber	Elancourt	501-1,000	223	133
7	Synacktiv	Toulouse	51-200	170	125
8	Cybelangel	Clichy	51-200	161	97
9	S3ns	Paris	51-200	153	85
10	ADNOV	n/a	201-500	139	67
11	Itrust	Toulouse	51-200	126	76
12	XMCO	Labege	51-200	112	4
13	Egerie	Paris	51-200	110	50
14	Quarkslab	Paris	51-200	94	45
15	Exclusive Networks France	Boulogne Billancourt	51-200	93	62
16	Sekera	Saint-Quentin-En-Yvelines	51-200	86	28
17	Lutessa	Paris	51-200	83	39
18	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
19	Aduneo	Malakoff	51-200	73	36
20	Eset France	Marne-La-Vallee	51-200	71	1
21	Tenacy	Lyon	51-200	61	27
22	OLFEO	Massy	51-200	60	43
23	Login Sécurité	Saint-Cloud	51-200	60	28
24	Vona Consulting	Paris	51-200	57	30
25	Amossys Groupe Almond	Rennes	201-500	57	28

Showing 25 of 904 cybersecurity services companies based in France

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Cybersecurity services companies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 263 HQs

294Contacts with mobile numbers

6Emails re-verified in last 30 days

Companies by employee count

1-10

604

11-50

219

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity services companies by metro

Metro	Companies
Cybersecurity services companies in Paris	263
Cybersecurity services companies in Lyon	32
Cybersecurity services companies in Toulouse	19
Cybersecurity services companies in Rennes	14
Cybersecurity services companies in Boulogne-Billancourt	12
Cybersecurity services companies in Puteaux	12
Cybersecurity services companies in Lille	11

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 services companies”, 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; 6 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 services companies are there based in France?

There are 904 cybersecurity services companies 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 services companies?

Paris leads with 263 headquartered companies, followed by Lyon (32) and Toulouse (19).

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 3,488 verified decision-maker contacts tracked across these 904 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.