Company lists · Data verified August 2026

Top 15 Cybersecurity training courses based in the Netherlands

Name: Cybersecurity training courses based in the Netherlands
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 41 companies tracked

There are 41 cybersecurity training courses headquartered in the Netherlands (RevenueBase, August 2026). RevenueBase tracks 261 professional contacts across them, including 90 with verified work emails and 28 with mobile numbers. Amsterdam is the largest hub.

This list covers cybersecurity training courses 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.

41Companies

261Contacts tracked

90Verified emails

28Mobile numbers

Unlock all 41 companies Free account · no credit card · 2 minutes

The 15 largest cybersecurity training courses based in the Netherlands

Ranked by team size

Top 15 of 41 cybersecurity training courses 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	Tstc ICT & Security Trainingen	Veenendaal	11-50	77	4
2	Surelock IT Security Services	Woerden	11-50	37	33
3	Threadstone Cyber Security	Km	11-50	23	13
4	Guardey	Eh	11-50	22	8
5	ARDA	Zoetermeer	11-50	22	4
6	Onyx Cybersecurity	Amersfoort	11-50	16	9
7	Opensight B.V	Breda	1-10	9	7
8	Optisec Cyber Security Trainingen	Gw	1-10	7	1
9	Proteqtor IT Security	Pv	1-10	4	4
10	Getcertified Opleidingen BV	Arnhem	1-10	2	2
11	BSH Academy	Ad	11-50	1	1
12	Besequre	Vroomshoop	1-10	1	1
13	Suricat	Beverwijk	1-10	1	1
14	Preventyf	Rotterdam	1-10	1	1
15	Scybird	Epe	1-10	1	1

Showing 15 of 41 cybersecurity training courses based in the Netherlands

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 90 reachable decision-makers.

Free account · no credit card

See all 41 companies

Cybersecurity training courses based in the Netherlands at a glance

As of Aug 28, 2026

1-10Median size (employees)

AmsterdamLargest hub · 5 HQs

28Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Cybersecurity training courses by metro

Metro	Companies
Cybersecurity training courses in Amsterdam	5
Cybersecurity training courses in Utrecht	3
Cybersecurity training courses in Rotterdam	2
Cybersecurity training courses in Nederland	2
Cybersecurity training courses in The Hague	2
Cybersecurity training courses in Almere	2
Cybersecurity training courses in Veenendaal	1
Cybersecurity training courses in Breda	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 “cybersecurity training courses”, 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 training courses are there based in the Netherlands?

There are 41 cybersecurity training courses headquartered in the Netherlands as of August 2026 (RevenueBase).

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 training courses?

Amsterdam leads with 5 headquartered companies, followed by Utrecht (3) and Rotterdam (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 90 verified decision-maker contacts tracked across these 41 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.

Ready to reach these companies? Verified emails and direct dials for all 41 cybersecurity training courses based in the Netherlands. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity training courses by geography

Browse the directory

Browse: Companies home · All Netherlands lists · All Cybersecurity training courses lists · New lists

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.