Company lists · Data refreshed September 2026

Top 25 Ot cyber solutions based in the Netherlands

RevenueBase identified 125 ot cyber solutions headquartered in the Netherlands as of September 2026 and tracks 1,506 professional contacts across them, including 507 with verified work emails. Amsterdam is the largest hub.

This list covers ot cyber solutions 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 21, 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 21, 2026 86% judged on-target in blind review
125Companies
1,506Contacts tracked
507Verified emails
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The 25 largest ot cyber solutions based in the Netherlands

Ranked by team size
Top 25 of 125 ot cyber solutions based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to ot cyber solutions: 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
1Strong evidenceRijswijk, NetherlandsHQ checked Sep 21, 2026201-500233 contacts →

Strong 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 21, 2026
2Partial evidenceUtrecht, NetherlandsHQ checked Sep 21, 2026201-500213 contacts →

Partial evidence

“Northwave Northwave offers an Intelligent combination of cyber security services to protect your information.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceDelft, NetherlandsHQ checked Sep 21, 202651-200104 contacts →

Indirect 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 21, 2026
4Indirect evidenceThe Hague, NetherlandsHQ checked Sep 21, 2026201-50072 contacts →

Indirect evidence

“Xalient ondersteunt toonaangevende organisaties bij het beschermen van hun meest waardevolle middelen: hun medewerkers, applicaties en data.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidence3447gg, NetherlandsHQ checked Sep 21, 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 21, 2026
6Indirect evidenceDelft, NetherlandsHQ checked Sep 21, 202611-5025 contacts →

Indirect 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 21, 2026
7Indirect evidenceRotterdam, NetherlandsHQ checked Sep 21, 202611-5023 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceLeiden, NetherlandsHQ checked Sep 21, 202611-5018 contacts →

Indirect evidence

“DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceUtrecht, NetherlandsHQ checked Sep 21, 202611-5015 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 21, 202611-5014 contacts →

Indirect evidence

“A DNV company.”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceLopik, NetherlandsHQ checked Sep 21, 202611-5014 contacts →

Indirect 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 21, 2026
12Partial evidenceRotterdam, NetherlandsHQ checked Sep 21, 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 21, 2026
13Indirect evidenceArnhem, NetherlandsHQ checked Sep 21, 202611-5013 contacts →

Indirect evidence

“CyberPeak supports organizations in structurally setting up, securing, and managing their network and cybersecurity environments.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceAlkmaar, NetherlandsHQ checked Sep 21, 20261-1012 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceAbcoude, NetherlandsHQ checked Sep 21, 202611-5010 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceRoelofarendsveen, NetherlandsHQ checked Sep 21, 20261-1010 contacts →

Indirect evidence

“Hoe vatbaar is jouw organisatie voor hacks?”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceBreda, NetherlandsHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
18Strong evidenceAmsterdam, NetherlandsHQ checked Sep 21, 20261-109 contacts →

Strong evidence

“Cert2Connect BV is the go-to party in the field of advanced digital security solutions, security services and cyber security.”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceEindhoven, NetherlandsHQ checked Sep 21, 2026201-5009 contacts →

Partial evidence

“TXOne Networks bietet OT-native All-Terrain-Cybersicherheitslösungen, die die Zuverlässigkeit und Sicherheit von ICS-Umgebungen durch die OT-Zero-Trust-Methodik gewährleisten.”

Source: RevenueBase Database · checked Sep 21, 2026
20Strong evidenceRijswijk, NetherlandsHQ checked Sep 21, 202611-508 contacts →

Strong evidence

“Hudson Cybertec is a cyber security solution provider for ICS/OT.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceEmmen, NetherlandsHQ checked Sep 21, 20261-107 contacts →

Indirect evidence

“Gespecialiseerd in cybersecurity”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceAmsterdam, NetherlandsHQ checked Sep 21, 202611-507 contacts →

Partial evidence

“Soteryan is a leading provider of cybersecurity consultancy and service solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceHaarlem, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“At Nautilus we are dedicated to transforming cybersecurity across Europe's critical infrastructures.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceSchijndel, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“WELP Software is specialized in Cybersecure Industrial Integration.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceZaandam, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“Netwerkbeveiliging is nog nooit zo uitdagend geweest.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 125 ot cyber solutions based in the Netherlands

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Ot cyber solutions based in the Netherlands at a glance

As of Sep 21, 2026
33.7%Verified-email coverage
12.0Average contacts per company
1-10Median size (employees)
13.6%Largest-city concentration · Amsterdam
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
78
11-50
30
51-200
6
201-500
10
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 125 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 ot cyber solutions, 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 “ot cyber solutions”. 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 ot cyber solutions), 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 ot cyber solutions, 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, 507 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 21, 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 ot cyber solutions, 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 ot cyber solutions are there based in the Netherlands?

RevenueBase identified 125 ot cyber solutions 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 ot cyber solutions?

Amsterdam leads with 17 headquartered companies, followed by Rotterdam (5) and Breda (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 507 verified decision-maker contacts tracked across these 125 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 21, 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.