Company lists · Data verified August 2026

Top 25 Cybersecurity threat detection companies based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 160 companies tracked

There are 160 cybersecurity threat detection companies headquartered in France (RevenueBase, August 2026). RevenueBase tracks 2,585 professional contacts across them, including 726 with verified work emails and 68 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity threat detection 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.

160Companies

2,585Contacts tracked

726Verified emails

68Mobile numbers

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The 25 largest cybersecurity threat detection companies based in France

Ranked by team size

Top 25 of 160 cybersecurity threat detection 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	own.security	Rennes	51-200	506	26
2	Cybelangel	Clichy	51-200	161	97
3	Itrust	Toulouse	51-200	126	76
4	Harfanglab	Paris	51-200	119	83
5	Quarkslab	Paris	51-200	94	45
6	Magellan Sécurité	Romilly-Sur-Seine	51-200	76	33
7	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
8	Eset France	Marne-La-Vallee	51-200	71	1
9	Strangebee	Paris	51-200	66	42
10	Qevlar AI	Paris	51-200	51	31
11	patrowl.io	Paris	11-50	49	35
12	Jizô AI	Paris	51-200	41	4
13	Crowdsec	Paris	11-50	36	29
14	Kytl Security	Paris	11-50	34	4
15	Randorisec	Paris	11-50	31	18
16	Abakus Sécurité	Paris	11-50	29	8
17	Qosmos	Paris	201-500	28	8
18	Five Nines	Paris	11-50	26	11
19	Oversoc	Lille	11-50	25	9
20	Sylink Technologie	Saint-Jacques-De-La-Lande	201-500	21	1
21	Ého.Link	n/a	11-50	16	13
22	V6protect	Bordeaux	11-50	16	8
23	u.neat	n/a	11-50	15	5
24	Saycurit	Paris	11-50	13	8
25	DND Agency	Paris	11-50	13	2

Showing 25 of 160 cybersecurity threat detection companies based in France

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Cybersecurity threat detection companies based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 59 HQs

68Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

100

11-50

51-200

201-500

1,001-5,000

10001+

Cybersecurity threat detection companies by metro

Metro	Companies
Cybersecurity threat detection companies in Paris	59
Cybersecurity threat detection companies in Lyon	6
Cybersecurity threat detection companies in Lille	4
Cybersecurity threat detection companies in Rennes	4
Cybersecurity threat detection companies in Toulouse	3
Cybersecurity threat detection companies in Caen	2
Cybersecurity threat detection companies in Villefranche	2

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 threat detection 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 threat detection companies are there based in France?

There are 160 cybersecurity threat detection companies headquartered in France as of August 2026 (RevenueBase).

What is the largest company on this list?

own.security, headquartered in Rennes, tops this list with the largest team on record.

Which city has the most cybersecurity threat detection companies?

Paris leads with 59 headquartered companies, followed by Lyon (6) and Lille (4).

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 726 verified decision-maker contacts tracked across these 160 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.