Company lists · Data verified August 2026

Top 25 Cybersecurity consultancy companies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 1,212 companies tracked

There are 1,212 cybersecurity consultancy companies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 14,726 professional contacts across them, including 4,682 with verified work emails and 376 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity consultancy 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.

1,212Companies

14,726Contacts tracked

4,682Verified emails

376Mobile numbers

Unlock all 1,212 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity consultancy companies based in France

Ranked by team size

Top 25 of 1,212 cybersecurity consultancy 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	Cyllene	Nanterre	201-500	279	206
7	Formind	Issy-Les-Moulineaux	201-500	252	136
8	Intrinsec	Courbevoie	201-500	247	140
9	Airbus Defence And Space Cyber	Elancourt	501-1,000	223	133
10	Synacktiv	Toulouse	51-200	170	125
11	Cybelangel	Clichy	51-200	161	97
12	Services Network Security	Montpellier	201-500	145	83
13	ADNOV	n/a	201-500	139	67
14	Itrust	Toulouse	51-200	126	76
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	LEXFO	Paris	51-200	65	40
25	Login Sécurité	Saint-Cloud	51-200	60	28

Showing 25 of 1,212 cybersecurity consultancy companies based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,682 reachable decision-makers.

Free account · no credit card

See all 1,212 companies

Cybersecurity consultancy companies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 348 HQs

376Contacts with mobile numbers

6Emails re-verified in last 30 days

Companies by employee count

1-10

841

11-50

275

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity consultancy companies by metro

Metro	Companies
Cybersecurity consultancy companies in Paris	348
Cybersecurity consultancy companies in Lyon	41
Cybersecurity consultancy companies in Toulouse	25
Cybersecurity consultancy companies in Rennes	18
Cybersecurity consultancy companies in Lille	16
Cybersecurity consultancy companies in Boulogne-Billancourt	14
Cybersecurity consultancy companies in Puteaux	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 consultancy 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 consultancy companies are there based in France?

There are 1,212 cybersecurity consultancy 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 consultancy companies?

Paris leads with 348 headquartered companies, followed by Lyon (41) and Toulouse (25).

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 4,682 verified decision-maker contacts tracked across these 1,212 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.

Ready to reach these companies? Verified emails and direct dials for all 1,212 cybersecurity consultancy companies based in France. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity consultancy companies by geography

Browse the directory

Browse: Companies home · All France lists · All Cybersecurity consultancy companies lists · New lists

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.