Company lists · Data refreshed September 2026

Top 22 Cybersecurity certification training providers based in the Netherlands

RevenueBase identified 50 cybersecurity certification training providers headquartered in the Netherlands as of September 2026 and tracks 556 professional contacts across them, including 113 with verified work emails. Amsterdam is the largest hub.

This list covers cybersecurity certification training providers 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 28, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
50Companies
556Contacts tracked
113Verified emails
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The 22 largest cybersecurity certification training providers based in the Netherlands

Ranked by team size
Top 22 of 50 cybersecurity certification training providers based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity certification training providers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceVeenendaal, NetherlandsHQ checked Sep 28, 202611-5077 contacts →

Partial evidence

“TSTC is sinds erkend specialist in trainingen (cyber)security, privacy en informatiebeveiliging.”

Source: RevenueBase Database · checked Sep 28, 2026
2Indirect evidence3447gg, NetherlandsHQ checked Sep 28, 202611-5037 contacts →

Indirect evidence

“Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceRotterdam, NetherlandsHQ checked Sep 28, 202611-5023 contacts →

Partial evidence

“ThreadStone is uw toonaangevende specialist op het gebied van cybersecurity.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceAmersfoort, NetherlandsHQ checked Sep 28, 202611-5016 contacts →

Indirect evidence

“Onyx Cyber Security provides a number of services related to the field of IT security.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceUtrecht, NetherlandsHQ checked Sep 28, 202611-5015 contacts →

Indirect evidence

“At Cyber Seals, we believe in a digital world where you can work, innovate, and grow securely.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceOosterhout, NetherlandsHQ checked Sep 28, 202611-5011 contacts →

Indirect evidence

“Provide total peace of mind in the digital field.”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceAbcoude, NetherlandsHQ checked Sep 28, 202611-5010 contacts →

Partial evidence

“Cyber Security Challengers (CSC) is uw onafhankelijke cybersecurity expert en dienstverlener.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceBreda, NetherlandsHQ checked Sep 28, 20261-109 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
9Strong evidenceWoerden, NetherlandsHQ checked Sep 28, 20261-107 contacts →

Strong evidence

“OptiSec is een gespecialiseerd cybersecurity trainingscentrum met een ongekende focus op kwaliteit en de mens.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceThe Hague, NetherlandsHQ checked Sep 28, 202611-506 contacts →

Partial evidence

“Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceHarderwijk, NetherlandsHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

“Iedereen verdient een veilige werkplek.”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceAn, NetherlandsHQ checked Sep 28, 20261-104 contacts →

Indirect evidence

“Enwere is opgericht in 2017 en richt zich als cyber security organisatie op het ondersteunen van klanten in hun cyberweerbaarheid journey.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceAmsterdam, NetherlandsHQ checked Sep 28, 20261-104 contacts →

Partial evidence

“Over BSM Business Security Management BV BSM biedt sinds 2004 gespecialiseerde cybersecurity- en informatiebeveiligingsdiensten aan voor onder andere MKB, scholen, stichtingen…”

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceApeldoorn, NetherlandsHQ checked Sep 28, 20261-103 contacts →

Indirect evidence

“Vanuit Apeldoorn helpen u graag met- Quick Scans Information Security - Quick Scans Fysieke beveiliging - Quick Scans Kwaliteit - Quick Scans Privacy - Uitleg en ondersteuning bij…”

Source: RevenueBase Database · checked Sep 28, 2026
15Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 28, 20261-103 contacts →

Indirect evidence

“Bij Socured geloven we niet in vendor-gedreven advies of losse oplossingen.”

Source: RevenueBase Database · checked Sep 28, 2026
16Partial evidenceTegelen, NetherlandsHQ checked Sep 28, 20261-103 contacts →

Partial evidence

“Cybersecurity en Informatie beveiliging.”

Source: RevenueBase Database · checked Sep 28, 2026
17Indirect evidenceArnhem, NetherlandsHQ checked Sep 28, 20261-102 contacts →

Indirect evidence

“Bij ons staat persoonlijke aandacht centraal.”

Source: RevenueBase Database · checked Sep 28, 2026
18Indirect evidenceTilburg, NetherlandsHQ checked Sep 28, 202611-501 contacts →

Indirect evidence

“LWM beveiliging & ict B.V.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceVroomshoop, NetherlandsHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“BeSequre is een organisatie die zich richt op het trainen van bedrijven in een security mindset.”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceVoorburg, NetherlandsHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“Assess and optimize the effectiveness of your Security Controls.”

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

“Expert Services for Cyber Security Our mission is to offer the top notch professionals with the knowledge of latest cyber tech tools help you to build security into your business…”

Source: RevenueBase Database · checked Sep 28, 2026
22Partial evidenceRotterdam, NetherlandsHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“Preventyf helps companies train their employees in cybersecurity awareness so that they better recognise cyber threats, mitigate risks and limit the impact of a hack.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 22 of 50 cybersecurity certification training providers based in the Netherlands

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Cybersecurity certification training providers based in the Netherlands at a glance

As of Sep 28, 2026
20.3%Verified-email coverage
11.1Average contacts per company
1-10Median size (employees)
8.0%Largest-city concentration · Amsterdam
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
35
11-50
12
51-200
1
201-500
2

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 50 companies.

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 certification training providers, 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 certification training providers”. 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 certification training providers), 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 certification training providers, 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, 113 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 28, 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 certification training providers, 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 certification training providers are there based in the Netherlands?

RevenueBase identified 50 cybersecurity certification training providers 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 certification training providers?

Amsterdam leads with 4 headquartered companies, followed by Rotterdam (3) and Utrecht (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 113 verified decision-maker contacts tracked across these 50 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 28, 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.