Company lists · Data verified August 2026

Top 25 Cybersecurity audit companies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 454 companies tracked

There are 454 cybersecurity audit companies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 5,069 professional contacts across them, including 1,533 with verified work emails and 107 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity audit 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.

454Companies

5,069Contacts tracked

1,533Verified emails

107Mobile numbers

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The 25 largest cybersecurity audit companies based in France

Ranked by team size

Top 25 of 454 cybersecurity audit 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	Synacktiv	Toulouse	51-200	170	125
4	XMCO	Labege	51-200	112	4
5	Egerie	Paris	51-200	110	50
6	Sekera	Saint-Quentin-En-Yvelines	51-200	86	28
7	Hara Consulting	Strasbourg	51-200	81	65
8	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
9	Cyberlift	Paris	51-200	55	31
10	Sysdream	Levallois-Perret	51-200	53	19
11	Eshard	n/a	11-50	49	28
12	Adenis	Bagnolet	51-200	43	15
13	Ornisec	Rennes	11-50	40	16
14	Feelagile	Paris	11-50	38	30
15	Løvell	Paris	11-50	38	25
16	ZIWIT	Boulogne-Billancourt	51-200	38	11
17	Kytl Security	Paris	11-50	34	4
18	Excube	Lyon	11-50	33	22
19	Bsecure	Paris	51-200	33	18
20	Randorisec	Paris	11-50	31	18
21	ACE Service	Rouen	11-50	30	5
22	Cybersel Group	Paris	11-50	27	18
23	Certilience	Limonest	11-50	26	12
24	Sec-It	Aix-En-Provence	11-50	26	11
25	Five Nines	Paris	11-50	26	11

Showing 25 of 454 cybersecurity audit companies based in France

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Cybersecurity audit companies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 141 HQs

107Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

332

11-50

51-200

201-500

1,001-5,000

10001+

Cybersecurity audit companies by metro

Metro	Companies
Cybersecurity audit companies in Paris	141
Cybersecurity audit companies in Lyon	16
Cybersecurity audit companies in Toulouse	11
Cybersecurity audit companies in Lille	9
Cybersecurity audit companies in Bordeaux	8
Cybersecurity audit companies in Rennes	7
Cybersecurity audit companies in Boulogne-Billancourt	6

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 audit 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; 3 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 audit companies are there based in France?

There are 454 cybersecurity audit 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 audit companies?

Paris leads with 141 headquartered companies, followed by Lyon (16) and Toulouse (11).

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 1,533 verified decision-maker contacts tracked across these 454 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.