Company lists · Data verified August 2026

Top 25 Cybersecurity consulting companies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,040 companies tracked

There are 1,040 cybersecurity consulting companies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 12,492 professional contacts across them, including 3,725 with verified work emails and 297 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity consulting 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.

1,040Companies

12,492Contacts tracked

3,725Verified emails

297Mobile numbers

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The 25 largest cybersecurity consulting companies based in France

Ranked by team size

Top 25 of 1,040 cybersecurity consulting 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	Metsys	Lille	501-1,000	408	246
4	Synetis	Cesson-Sevigne	201-500	369	209
5	Devoteam Cyber Trust	Levallois-Perret	10001+	342	145
6	Formind	Issy-Les-Moulineaux	201-500	252	136
7	Intrinsec	Courbevoie	201-500	247	140
8	Airbus Defence And Space Cyber	Elancourt	501-1,000	223	133
9	Synacktiv	Toulouse	51-200	170	125
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	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
18	Aduneo	Malakoff	51-200	73	36
19	LEXFO	Paris	51-200	65	40
20	Login Sécurité	Saint-Cloud	51-200	60	28
21	FOKUS	Lyon	51-200	60	12
22	Vona Consulting	Paris	51-200	57	30
23	Scassi	n/a	51-200	57	29
24	Amossys Groupe Almond	Rennes	201-500	57	28
25	Cyberlift	Paris	51-200	55	31

Showing 25 of 1,040 cybersecurity consulting companies based in France

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Cybersecurity consulting companies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 311 HQs

297Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

731

11-50

231

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity consulting companies by metro

Metro	Companies
Cybersecurity consulting companies in Paris	311
Cybersecurity consulting companies in Lyon	34
Cybersecurity consulting companies in Toulouse	21
Cybersecurity consulting companies in Rennes	16
Cybersecurity consulting companies in Lille	15
Cybersecurity consulting companies in Nantes	12
Cybersecurity consulting companies in Puteaux	12

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 consulting 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; 5 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 consulting companies are there based in France?

There are 1,040 cybersecurity consulting 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 consulting companies?

Paris leads with 311 headquartered companies, followed by Lyon (34) and Toulouse (21).

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 3,725 verified decision-maker contacts tracked across these 1,040 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.