Company lists · Data verified August 2026

Top 25 Cybersecurity startups based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 726 companies tracked

There are 726 cybersecurity startups headquartered in France (RevenueBase, August 2026). RevenueBase tracks 8,391 professional contacts across them, including 2,696 with verified work emails and 250 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity startups 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.

726Companies

8,391Contacts tracked

2,696Verified emails

250Mobile numbers

Unlock all 726 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity startups based in France

Ranked by team size

Top 25 of 726 cybersecurity startups 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	Airbus Defence And Space Cyber	Elancourt	501-1,000	223	133
5	Stanley Security France	Francheville	1,001-5,000	191	1
6	Filigran	Paris	201-500	167	109
7	Cybelangel	Clichy	51-200	161	97
8	S3ns	Paris	51-200	153	85
9	Itrust	Toulouse	51-200	126	76
10	Quarkslab	Paris	51-200	94	45
11	Magellan Sécurité	Romilly-Sur-Seine	51-200	76	33
12	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
13	Aduneo	Malakoff	51-200	73	36
14	Eset France	Marne-La-Vallee	51-200	71	1
15	Tenacy	Lyon	51-200	61	27
16	Login Sécurité	Saint-Cloud	51-200	60	28
17	Amossys Groupe Almond	Rennes	201-500	57	28
18	Cyberlift	Paris	51-200	55	31
19	Techso Group	Paris	51-200	54	24
20	Sealsq	Meyreuil	51-200	53	40
21	EVINA	n/a	51-200	53	36
22	Sysdream	Levallois-Perret	51-200	53	19
23	Mantra	Paris	51-200	52	33
24	Dattak	Paris	51-200	51	28
25	AISI	Montpellier	51-200	50	31

Showing 25 of 726 cybersecurity startups based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,696 reachable decision-makers.

Free account · no credit card

See all 726 companies

Cybersecurity startups based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 239 HQs

250Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

490

11-50

174

51-200

201-500

501-1,000

1,001-5,000

10001+

Cybersecurity startups by metro

Metro	Companies
Cybersecurity startups in Paris	239
Cybersecurity startups in Lyon	26
Cybersecurity startups in Toulouse	17
Cybersecurity startups in Lille	14
Cybersecurity startups in Rennes	13
Cybersecurity startups in Boulogne-Billancourt	9
Cybersecurity startups in Montpellier	8

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 startups”, 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 startups are there based in France?

There are 726 cybersecurity startups 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 startups?

Paris leads with 239 headquartered companies, followed by Lyon (26) and Toulouse (17).

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 2,696 verified decision-maker contacts tracked across these 726 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 726 cybersecurity startups based in France. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity startups by geography

Browse the directory

Browse: Companies home · All France lists · All Cybersecurity startups 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.