Company lists · Data refreshed September 2026

Top 25 Security incident management companies based in the Netherlands

RevenueBase identified 115 security incident management companies headquartered in the Netherlands as of September 2026 and tracks 1,130 professional contacts across them, including 413 with verified work emails. Amsterdam is the largest hub.

This list covers security incident management companies 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 29, 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 29, 2026 86% judged on-target in blind review
115Companies
1,130Contacts tracked
413Verified emails
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The 25 largest security incident management companies based in the Netherlands

Ranked by team size
Top 25 of 115 security incident management companies based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to security incident management companies: 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
1Indirect evidenceRijswijk, NetherlandsHQ checked Sep 29, 2026201-500233 contacts →

Indirect evidence

“Fox-IT prevents, solves and mitigates the most serious cyber threats with innovative solutions for government, defense, law enforcement, critical infrastructure, banking, and…”

Source: RevenueBase Database · checked Sep 29, 2026
2Partial evidenceEnschede, NetherlandsHQ checked Sep 29, 2026201-500119 contacts →

Partial evidence

“Kenmerkend voor RJ Safety & Security is de samenwerking van de negen operationele afdelingen.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceNieuwegein, NetherlandsHQ checked Sep 29, 202651-20091 contacts →

Partial evidence

“Tesorion is een Nederlandse, onafhankelijke Managed Security Services Provider (MSSP).”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceVlaardingen, NetherlandsHQ checked Sep 29, 202611-5037 contacts →

Partial evidence

“H2K provides knowledge on incidents response and incidents control.”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidenceGroningen, NetherlandsHQ checked Sep 29, 202611-5030 contacts →

Indirect evidence

“Ferwerda Beveiliging geeft onafhankelijk advies en bemiddeling op het gebied van veiligheid.”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceRotterdam, NetherlandsHQ checked Sep 29, 202611-5023 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceOosterhout, NetherlandsHQ checked Sep 29, 202611-5019 contacts →

Indirect evidence

“Smits van Burgst Beveiliging B.V.”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceEindhoven, NetherlandsHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“Defenced is the IT security knowledge partner for large and medium-sized organizations.”

Source: RevenueBase Database · checked Sep 29, 2026
9Partial evidenceSittard, NetherlandsHQ checked Sep 29, 202651-20017 contacts →

Partial evidence

“F4SEC Security Group BV is a security and investigations company based out of Sittard, Netherlands.”

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceDe Koog, NetherlandsHQ checked Sep 29, 202611-5016 contacts →

Partial evidence

“Acies International is a Netherlands based but worldwide operating security services provider.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceDidam, NetherlandsHQ checked Sep 29, 202611-5015 contacts →

Indirect evidence

“Uw veiligheid, onze zorg Bij Garant Beveiliging staan kwaliteit, betrouwbaarheid en innovatie centraal.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceLopik, NetherlandsHQ checked Sep 29, 202611-5014 contacts →

Partial evidence

“Bij HOB ICT Security werken we dagelijks aan het versterken van de weerbaarheid van middelgrote en grote organisaties tegen alle vormen van cyberdreigingen.”

Source: RevenueBase Database · checked Sep 29, 2026
13Indirect evidenceRotterdam, NetherlandsHQ checked Sep 29, 202611-5014 contacts →

Indirect evidence

“Democratizing Cybersecurity.”

Source: RevenueBase Database · checked Sep 29, 2026
14Partial evidenceRotterdam, NetherlandsHQ checked Sep 29, 202611-5014 contacts →

Partial evidence

“Base is a niche consultancy & managed security solutions provider, offering services enabling organizations, and professionals, to build knowledge & capabilities in information…”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceHouten, NetherlandsHQ checked Sep 29, 202611-5013 contacts →

Indirect evidence

“Wilt u uw klanten een allround 24*7 bereikbaarheid bieden, zonder dat u daar zelf een continue bezetting op kantoor voor hoeft in te vullen?”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceRijsenhout, NetherlandsHQ checked Sep 29, 202611-5012 contacts →

Partial evidence

“We are Castellum Security Collective: a growing group of specialists active in the security sector.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceAlkmaar, NetherlandsHQ checked Sep 29, 20261-1012 contacts →

Partial evidence

“Specialists from Sirius Security have all the skills to help enterprise organisations to secure their IT environment.”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidenceBilthoven, NetherlandsHQ checked Sep 29, 202611-5011 contacts →

Partial evidence

“Bij Cortex geloven we dat de meeste security risico's op een comfortabele en praktische wijze kunnen worden voorkomen.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceRoelofarendsveen, NetherlandsHQ checked Sep 29, 20261-1010 contacts →

Indirect evidence

“Hoe vatbaar is jouw organisatie voor hacks?”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceBruinisse, NetherlandsHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Hak Beveiliging verzorgt ruim 24 jaar beveiligingsystemen van de hoogste kwaliteit tegen een scherpe prijs.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceAn, NetherlandsHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Cebec beveiligingen is in 1974 begonnen als beveiligingsbedrijf in Rotterdam.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceRotterdam, NetherlandsHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

“Your IT infrastructure is essential to your operation.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceZwolle, NetherlandsHQ checked Sep 29, 20261-109 contacts →

Indirect evidence

“Wij beschermen wat van waarde is.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceGroningen, NetherlandsHQ checked Sep 29, 202611-508 contacts →

Partial evidence

“PM Security is een onafhankelijk beveiligingsbedrijf; vertrouwd door tientallen bedrijven waaronder horecaondernemingen, evenementen, overheidsinstellingen en winkels.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceDen Helder, NetherlandsHQ checked Sep 29, 202611-508 contacts →

Indirect evidence

“Al meer dan 40 jaar het het adviesbureau voor brandpreventie, inbraakpreventie, veiligheids en veiligheidsopleidingen en het beveiligingsbedrijf voor al uw zaken betreffende alarm…”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 115 security incident management companies based in the Netherlands

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Security incident management companies based in the Netherlands at a glance

As of Sep 29, 2026
36.5%Verified-email coverage
9.8Average contacts per company
11-50Median size (employees)
5.2%Largest-city concentration · Amsterdam
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
55
11-50
43
51-200
10
201-500
5
1,001-5,000
1

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 115 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 security incident management companies, 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 “security incident management companies”. 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 security incident management companies), 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 security incident management companies, 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, 413 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 29, 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 security incident management companies, 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 security incident management companies are there based in the Netherlands?

RevenueBase identified 115 security incident management companies 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?

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

Which city has the most security incident management companies?

Amsterdam leads with 6 headquartered companies, followed by Rotterdam (5) and The Hague (4).

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 413 verified decision-maker contacts tracked across these 115 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 29, 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.