Company lists · Data refreshed September 2026

Top 25 24/7 security operations centers based in the Netherlands

RevenueBase identified 75 24/7 security operations centers headquartered in the Netherlands as of September 2026 and tracks 963 professional contacts across them, including 363 with verified work emails. Rotterdam is the largest hub.

This list covers 24/7 security operations centers 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 27, 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 27, 2026 86% judged on-target in blind review
75Companies
963Contacts tracked
363Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest 24/7 security operations centers based in the Netherlands

Ranked by team size
Top 25 of 75 24/7 security operations centers based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to 24/7 security operations centers: 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 27, 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 27, 2026
2Partial evidenceDelft, NetherlandsHQ checked Sep 27, 202651-200104 contacts →

Partial evidence

“Pinewood te Delft is al 28 jaar de specialist in cybersecurity en voor veel bedrijven en organisaties de one-stop security partner.”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceNieuwegein, NetherlandsHQ checked Sep 27, 202651-20091 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
4Partial evidenceHague, NetherlandsHQ checked Sep 27, 202651-20044 contacts →

Partial evidence

“Logsign empowers organizations to achieve true cyber resilience, going beyond traditional security tools to deliver proactive defense.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceRijswijk, NetherlandsHQ checked Sep 27, 202651-20028 contacts →

Indirect evidence

“Al meer dan 40 jaar is Westvlietbewaking het vertrouwde adres voor het snel, adequaat en betrouwbaar uitvoeren van alle voorkomende beveiligingswerkzaamheden, facilitydiensten en…”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceRotterdam, NetherlandsHQ checked Sep 27, 202611-5023 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
7Partial evidenceAlkmaar, NetherlandsHQ checked Sep 27, 202611-5023 contacts →

Partial evidence

“Spyke Security is een facilitaire dienstverlener op het gebied van cameratoezicht.”

Source: RevenueBase Database · checked Sep 27, 2026
8Indirect evidenceTilburg, NetherlandsHQ checked Sep 27, 202611-5021 contacts →

Indirect evidence

“Veiligheid die werkt.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceEindhoven, NetherlandsHQ checked Sep 27, 202611-5019 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 27, 202651-20018 contacts →

Indirect evidence

“Steeds meer mensen leven met een gevoel van onveiligheid.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceLopik, NetherlandsHQ checked Sep 27, 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 27, 2026
12Indirect evidenceRotterdam, NetherlandsHQ checked Sep 27, 202611-5014 contacts →

Indirect evidence

“Democratizing Cybersecurity.”

Source: RevenueBase Database · checked Sep 27, 2026
13Strong evidenceHouten, NetherlandsHQ checked Sep 27, 202611-5013 contacts →

Strong 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 27, 2026
14Partial evidenceRijsenhout, NetherlandsHQ checked Sep 27, 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 27, 2026
15Indirect evidenceVeenendaal, NetherlandsHQ checked Sep 27, 202611-5012 contacts →

Indirect evidence

“De dreiging van cyberaanvallen is groot.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceAlkmaar, NetherlandsHQ checked Sep 27, 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 27, 2026
17Indirect evidenceSchiphol-rijk, NetherlandsHQ checked Sep 27, 202611-5011 contacts →

Indirect evidence

“dit is anders in beveiliging, want dit regelt de gehele beveiliging in één keer.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceZuidlaren, NetherlandsHQ checked Sep 27, 202611-5010 contacts →

Partial evidence

“Waker Cyber Security is hét cybersecuritybedrijf van het Noorden.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceRotterdam, NetherlandsHQ checked Sep 27, 202611-509 contacts →

Partial evidence

“Your IT infrastructure is essential to your operation.”

Source: RevenueBase Database · checked Sep 27, 2026
20Strong evidenceNaaldwijk, NetherlandsHQ checked Sep 27, 20261-108 contacts →

Strong evidence

“H&G Security levert 24 uur per dag, 7 dagen dagen per week beveiligingsdiensten.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidenceDen Haag, NetherlandsHQ checked Sep 27, 202611-507 contacts →

Indirect evidence

“Bescherm uw kritische dienstverlening, intellectuele eigendommen en gevoelige data met het managed detection and response systeem van SBL Cybermonitoring.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceEindhoven, NetherlandsHQ checked Sep 27, 20261-107 contacts →

Partial evidence

“Nerium is a cyber security company specialized in monitoring, detecting, and responding to digital attacks.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceRotterdam, NetherlandsHQ checked Sep 27, 202611-507 contacts →

Indirect evidence

“Hofland-Electronica B.V.”

Source: RevenueBase Database · checked Sep 27, 2026
24Indirect evidenceRoosendaal, NetherlandsHQ checked Sep 27, 202611-505 contacts →

Indirect evidence

“Alarm Control Nederland is een particuliere alarmcentrale, wij zorgen ervoor dat de alarmmeldingen van zowel particulieren als bedrijven op een adequate manier worden behandeld.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceRoermond, NetherlandsHQ checked Sep 27, 202611-505 contacts →

Indirect evidence

“Bij XTRN-SECURE, een vooruitstrevende ICT-organisatie, hebben we een diepgewortelde passie voor cybersecurity.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 75 24/7 security operations centers based in the Netherlands

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 363 reachable decision-makers.

Free signup · no credit card

View the full list →

24/7 security operations centers based in the Netherlands at a glance

As of Sep 27, 2026
37.7%Verified-email coverage
12.8Average contacts per company
11-50Median size (employees)
5.3%Largest-city concentration · Rotterdam
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
30
11-50
31
51-200
7
201-500
5
1,001-5,000
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 75 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 24/7 security operations centers, 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 “24/7 security operations centers”. 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 24/7 security operations centers), 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 24/7 security operations centers, 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, 363 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 27, 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 24/7 security operations centers, 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 24/7 security operations centers are there based in the Netherlands?

RevenueBase identified 75 24/7 security operations centers 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 24/7 security operations centers?

Rotterdam leads with 4 headquartered companies, followed by Amsterdam (3) and Eindhoven (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 363 verified decision-maker contacts tracked across these 75 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 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 75 24/7 security operations centers based in the Netherlands. Start with a free account, no credit card.

Download this list →

Related lists

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.