Company lists · Data verified August 2026

Top 25 Cybersecurity incident response firms based in the Netherlands

There are 203 cybersecurity incident response firms headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 2,272 professional contacts across them, including 808 with verified work emails and 104 with mobile numbers. Amsterdam is the largest hub.

This list covers cybersecurity incident response firms headquartered in the Netherlands, 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.

203Companies
2,272Contacts tracked
808Verified emails
104Mobile numbers
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The 25 largest cybersecurity incident response firms based in the Netherlands

Ranked by team size
Top 25 of 203 cybersecurity incident response firms based in the Netherlands, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1Fox-ItGk201-500237128
2EYE SecurityDen Haag201-500210114
3ComsecAmsterdam51-20014017
4TesorionNieuwegein51-2009256
5On2it CybersecurityLj51-2008344
6NedscaperAmsterdam51-2005937
7Nfir B.VRijswijk51-2004128
8Hunt & HackettThe Hague51-2004023
9Surelock IT Security ServicesWoerden11-503733
10H2kKk11-503716
11CybermeisterDeventer51-200271
12Lemonshark CybersecurityUtrecht11-502521
13LBVDDelft11-50245
14Threadstone Cyber SecurityKm11-502313
15FalconforceUtrecht11-502011
16Defenced Cyber SecurityEindhoven11-501811
17Reqon B.VLeiderdorp11-501611
18Route443Heerlen11-501610
19Cyber SealsUtrecht11-50159
20HOB ICT SecurityLopik11-501411
21EightfenceRotterdam11-50146
22Base Cyber SecurityAk11-50143
23Schippers IT Your Digital SpecialistOosterhout11-50138
24MODATn/a11-50136
25Secwatch B.VAlmere11-50118

Showing 25 of 203 cybersecurity incident response firms based in the Netherlands

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Cybersecurity incident response firms based in the Netherlands at a glance

As of Aug 28, 2026
1-10Median size (employees)
AmsterdamLargest hub · 25 HQs
104Contacts with mobile numbers
0Emails re-verified in last 30 days

Companies by employee count

1-10
125
11-50
53
51-200
15
201-500
9
1,001-5,000
1

Cybersecurity incident response firms by metro

MetroCompanies
Cybersecurity incident response firms in Amsterdam25
Cybersecurity incident response firms in Utrecht8
Cybersecurity incident response firms in Eindhoven6
Cybersecurity incident response firms in The Hague6
Cybersecurity incident response firms in Rotterdam5
Cybersecurity incident response firms in Zwolle4
Cybersecurity incident response firms in Deventer4

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 firms”, with match quality audited by blind human judging, and headquartered in the Netherlands.
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; 0 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 firms are there based in the Netherlands?

There are 203 cybersecurity incident response firms headquartered in the Netherlands as of August 2026 (RevenueBase).

What is the largest company on this list?

Fox-It, headquartered in Gk, tops this list with the largest team on record.

Which city has the most cybersecurity incident response firms?

Amsterdam leads with 25 headquartered companies, followed by Utrecht (8) and Eindhoven (6).

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 808 verified decision-maker contacts tracked across these 203 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.