Company lists · Data verified August 2026

Top 23 Application security companies based in the Netherlands

Name: Application security companies based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 57 companies tracked

There are 57 application security companies headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 707 professional contacts across them, including 230 with verified work emails and 102 with mobile numbers. Amsterdam is the largest hub.

This list covers application security companies 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.

57Companies

707Contacts tracked

230Verified emails

102Mobile numbers

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The 23 largest application security companies based in the Netherlands

Ranked by team size

Top 23 of 57 application security companies based in the Netherlands, 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	Outpost24	Xx	201-500	276	132
2	Securify	Ca	11-50	38	27
3	Dongit	Xc	11-50	18	11
4	Whitehats B.V	Ae	11-50	11	8
5	Sofecta Labs	Amsterdam	1-10	11	8
6	Cyber Cloud	Bleskensgraaf	1-10	10	8
7	Websafety Ninja	Reuver	11-50	8	5
8	Securiment	Amsterdam	11-50	8	2
9	Attic Security	Cj	11-50	7	5
10	Catcher24	Amsterdam	1-10	5	5
11	Omnext Cerios Solutions	Utrecht	11-50	5	1
12	Cyberant	Zeewolde	1-10	4	2
13	Securely	Eindhoven	1-10	4	2
14	DCODX	Amsterdam	1-10	3	3
15	Cerberos	Jn	1-10	3	2
16	Codean Labs	Kv	1-10	3	2
17	Securednow	Cs	51-200	3	1
18	Inpedio	The Hague	11-50	2	1
19	Code Guardian	Amsterdam	1-10	2	1
20	Isoc24	Ak	11-50	1	1
21	hackurity.io	Rotterdam	1-10	1	1
22	Yafsec	Dedemsvaart	1-10	1	1
23	Cynalytics B.V	Capelle Aan Den Ijssel	1-10	1	1

Showing 23 of 57 application security companies based in the Netherlands

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Application security companies based in the Netherlands at a glance

As of Aug 28, 2026

1-10Median size (employees)

AmsterdamLargest hub · 17 HQs

102Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Application security companies by metro

Metro	Companies
Application security companies in Amsterdam	17
Application security companies in Groningen	2
Application security companies in Eindhoven	2
Application security companies in Utrecht	2
Application security companies in Ds	1
Application security companies in Cj	1
Application security companies in Hd	1
Application security companies in Bleskensgraaf	1

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 “application security companies”, 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; 1 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 application security companies are there based in the Netherlands?

There are 57 application security companies headquartered in the Netherlands as of August 2026 (RevenueBase).

What is the largest company on this list?

Outpost24, headquartered in Xx, tops this list with the largest team on record.

Which city has the most application security companies?

Amsterdam leads with 17 headquartered companies, followed by Groningen (2) and Eindhoven (2).

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 230 verified decision-maker contacts tracked across these 57 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.