Company lists · Data verified August 2026

Top 25 Cybersecurity incident response based in France

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 221 companies tracked

There are 221 cybersecurity incident response headquartered in France (RevenueBase, August 2026). RevenueBase tracks 2,993 professional contacts across them, including 950 with verified work emails and 52 with mobile numbers. Paris is the largest hub.

This list covers cybersecurity incident response 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.

221Companies

2,993Contacts tracked

950Verified emails

52Mobile numbers

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The 25 largest cybersecurity incident response based in France

Ranked by team size

Top 25 of 221 cybersecurity incident response 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	Quarkslab	Paris	51-200	94	45
4	CS In Cybersecurity	Le Plessis-Robinson	51-200	75	20
5	Strangebee	Paris	51-200	66	42
6	Techso Group	Paris	51-200	54	24
7	Ornisec	Rennes	11-50	40	16
8	Løvell	Paris	11-50	38	25
9	MGM Solutions	Bron	11-50	35	23
10	Kytl Security	Paris	11-50	34	4
11	Excube	Lyon	11-50	33	22
12	Bsecure	Paris	51-200	33	18
13	Randorisec	Paris	11-50	31	18
14	ACE Service	Rouen	11-50	30	5
15	Abakus Sécurité	Paris	11-50	29	8
16	Cybermaker	Saint Cloud	11-50	26	12
17	Sec-It	Aix-En-Provence	11-50	26	11
18	Five Nines	Paris	11-50	26	11
19	Cyberdian Groupe	n/a	11-50	26	4
20	Manika	La Defense	201-500	22	5
21	WLF	Paris	11-50	21	6
22	Harmonie Technologie Site	Paris	51-200	21	5
23	Alcyconie	Puteaux	11-50	19	12
24	Cresco Cybersecurity	Montigny-Le-Bretonneux	11-50	19	11
25	Intuity	Paris	11-50	16	7

Showing 25 of 221 cybersecurity incident response based in France

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Cybersecurity incident response based in France at a glance

As of Aug 28, 2026

1-10Median size (employees)

ParisLargest hub · 76 HQs

52Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

155

11-50

51-200

201-500

1,001-5,000

Cybersecurity incident response by metro

Metro	Companies
Cybersecurity incident response in Paris	76
Cybersecurity incident response in Lyon	9
Cybersecurity incident response in Rennes	7
Cybersecurity incident response in Lille	6
Cybersecurity incident response in Puteaux	4
Cybersecurity incident response in Rouen	3
Cybersecurity incident response in Aix-En-Provence	3

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 incident response”, 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; 2 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 incident response are there based in France?

There are 221 cybersecurity incident response 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 incident response?

Paris leads with 76 headquartered companies, followed by Lyon (9) and Rennes (7).

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 950 verified decision-maker contacts tracked across these 221 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.