Company lists · Data refreshed September 2026

Top 25 Cybersecurity skills testing platforms based in the Netherlands

Name: Cybersecurity skills testing platforms based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 77 companies tracked

RevenueBase identified 77 cybersecurity skills testing platforms headquartered in the Netherlands as of September 2026 and tracks 438 professional contacts across them, including 165 with verified work emails and 46 with mobile numbers. Amsterdam is the largest hub.

This list covers cybersecurity skills testing platforms headquartered in the Netherlands, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

77Companies

438Contacts tracked

165Verified emails

46Mobile numbers

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The 25 largest cybersecurity skills testing platforms based in the Netherlands

Ranked by team size

Top 25 of 77 cybersecurity skills testing platforms based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity skills testing platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Tstc ICT & Security Trainingen	Indirect evidence	Veenendaal, Netherlands	11-50	77 contacts →
	Indirect evidence “TSTC is sinds erkend specialist in trainingen (cyber)security, privacy en informatiebeveiliging.” Source: RevenueBase Database · checked Sep 1, 2026
2	Securify	Strong evidence	Ca, Netherlands	11-50	38 contacts →
	Strong evidence “Penetration Testing \| Agile Security Testing \| Red Teaming Securify is a cybersecurity company with a team of professional and passionate ethical hackers, secure coding experts…” Source: RevenueBase Database · checked Sep 1, 2026
3	Surelock IT Security Services	Indirect evidence	Woerden, Netherlands	11-50	37 contacts →
	Indirect evidence “Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.” Source: RevenueBase Database · checked Sep 1, 2026
4	The S-Unit	Indirect evidence	Utrecht, Netherlands	11-50	28 contacts →
	Indirect evidence “Omdat IT van onschatbare waarde is om commerciële en maatschappelijke doelen te verwezenlijken zijn pogingen om onrechtmatige toegang tot uw informatie te krijgen helaas aan de…” Source: RevenueBase Database · checked Sep 1, 2026
5	Awaretrain Security Awareness	Indirect evidence	Bb, Netherlands	11-50	26 contacts →
	Indirect evidence “Awaretrain helps organisations build a strong security culture, where employees stay digitally secure and information-aware.” Source: RevenueBase Database · checked Sep 1, 2026
6	LBVD	Partial evidence	Delft, Netherlands	11-50	24 contacts →
	Partial evidence “LBVD is een Delfts onderzoeks- en adviesbureau gespecialiseerd in digitale veiligheid, cybersecurity (ICT-security) en informatiebeveiliging, met 20+ jaar ervaring.” Source: RevenueBase Database · checked Sep 1, 2026
7	MODAT	Partial evidence	Netherlands	11-50	13 contacts →
	Partial evidence “Founded in 2024, Modat is a European research-driven cybersecurity company focused on strengthening cyber resilience for individuals, companies, and governments.” Source: RevenueBase Database · checked Sep 1, 2026
8	Secwatch B.V	Indirect evidence	Almere, Netherlands	11-50	11 contacts →
	Indirect evidence “Even when your security is well underpinned, it remains important to remain alert to possible vulnerabilities, to the system's alerting and response capabilities and to the…” Source: RevenueBase Database · checked Sep 1, 2026
9	Cyber Security District	Strong evidence	Netherlands	1-10	11 contacts →
	Strong evidence “Welcome to Cyber Security District - The #1 Career Platform Since 2018, we are here to help you advance your cybersecurity career, so that together we can close the cybersecurity…” Source: RevenueBase Database · checked Sep 1, 2026
10	Cyber Cloud	Indirect evidence	Bleskensgraaf, Netherlands	1-10	10 contacts →
	Indirect evidence “Cyber Cloud is een jong, ambitieus en innovatief bedrijf, gespecialiseerd in het uitvoeren van technische testen met als doel kwetsbaarheden in uw (web/mobiele)applicaties…” Source: RevenueBase Database · checked Sep 1, 2026
11	ONVIO	Indirect evidence	Gv, Netherlands	11-50	9 contacts →
	Indirect evidence “Onvio is dé specialist in het uitvoeren van Pentesten.” Source: RevenueBase Database · checked Sep 1, 2026
12	Qualityhouse	Indirect evidence	Ll, Netherlands	51-200	9 contacts →
	Indirect evidence “Qualityhouse heet sinds 1 januari 2014 Centric.” Source: RevenueBase Database · checked Sep 1, 2026
13	Websec B.V	Indirect evidence	Cd, Netherlands	11-50	7 contacts →
	Indirect evidence “WebSec is an all-in-one security company.” Source: RevenueBase Database · checked Sep 1, 2026
14	Blueprint Cyber Security	Partial evidence	The Hague, Netherlands	11-50	6 contacts →
	Partial evidence “Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.” Source: RevenueBase Database · checked Sep 1, 2026
15	Secured By Design	Indirect evidence	Eb, Netherlands	11-50	6 contacts →
	Indirect evidence “Is uw infrastructuur bestand tegen cybercrime?” Source: RevenueBase Database · checked Sep 1, 2026
16	Proctorexam	Indirect evidence	Kl, Netherlands	11-50	5 contacts →
	Indirect evidence “ProctorExam is a scale-up which emerged in 2014 and is located in the heart of Amsterdam, Netherlands.” Source: RevenueBase Database · checked Sep 1, 2026
17	Shellback	Indirect evidence	Ea, Netherlands	1-10	5 contacts →
	Indirect evidence “Shellback is an enthusiastic and dedicated team of security specialists based in Weert.” Source: RevenueBase Database · checked Sep 1, 2026
18	CREDS	Partial evidence	Ad, Netherlands	1-10	4 contacts →
	Partial evidence “Al 10 jaar is CREDS dé kennispartner op het gebied van offensieve cybersecurity-oplossingen voor organisaties waar een veilige digitale infrastructuur cruciaal is voor de…” Source: RevenueBase Database · checked Sep 1, 2026
19	Cyberant	Indirect evidence	Zeewolde, Netherlands	1-10	4 contacts →
	Indirect evidence “Stel je voor, ergens in het digitale universum waarin we leven, zijn er sluwe hackers die de boel willen verstoren.” Source: RevenueBase Database · checked Sep 1, 2026
20	Tozetta	Indirect evidence	Aa, Netherlands	1-10	3 contacts →
	Indirect evidence “Welkom op ons Tozetta bedrijfsprofiel.” Source: RevenueBase Database · checked Sep 1, 2026
21	Socured Cybersecurity	Indirect evidence	Amsterdam, Netherlands	1-10	3 contacts →
	Indirect evidence “Bij Socured geloven we niet in vendor-gedreven advies of losse oplossingen.” Source: RevenueBase Database · checked Sep 1, 2026
22	Codean Labs	Indirect evidence	Kv, Netherlands	1-10	3 contacts →
	Indirect evidence “Codean Labs ethical hackers evaluate the security of your solution and guide you towards vulnerability remediation, from design to production and beyond.” Source: RevenueBase Database · checked Sep 1, 2026
23	Virtual Hacking Labs	Partial evidence	Haarlem, Netherlands	1-10	2 contacts →
	Partial evidence “The Virtual Hacking Labs is an InfoSec e-learning company focusing on practical penetration testing training solutions.” Source: RevenueBase Database · checked Sep 1, 2026
24	Isoc24	Indirect evidence	Ak, Netherlands	11-50	1 contacts →
	Indirect evidence “Our portfolio consists of the following high-quality & intelligence-driven solutions.” Source: RevenueBase Database · checked Sep 1, 2026
25	hackurity.io	Indirect evidence	Rotterdam, Netherlands	1-10	1 contacts →
	Indirect evidence “We provide you with a constant, realtime overview of your current security position to withstand the latest threats.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity skills testing platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity skills testing platforms.
Partial evidence: Its own public description names part of cybersecurity skills testing platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity skills testing platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 77 cybersecurity skills testing platforms based in the Netherlands

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Cybersecurity skills testing platforms based in the Netherlands at a glance

As of Sep 1, 2026

37.7%Verified-email coverage

10.5%Mobile-number coverage

5.7Average contacts per company

1-10Median size (employees)

16.9%Largest-city concentration · Amsterdam

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cybersecurity skills testing platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the Netherlands whose own description of what they do matches “cybersecurity skills testing platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity skills testing platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cybersecurity skills testing platforms, and records with no verified work email. Companies headquartered outside Netherlands are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 165 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity skills testing platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cybersecurity skills testing platforms are there based in the Netherlands?

RevenueBase identified 77 cybersecurity skills testing platforms headquartered in the Netherlands as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Tstc ICT & Security Trainingen, headquartered in Veenendaal, tops this list with the largest team on record.

Which city has the most cybersecurity skills testing platforms?

Amsterdam leads with 13 headquartered companies, followed by Utrecht (4) and Rotterdam (3).

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 165 verified decision-maker contacts tracked across these 77 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.