Company lists · Data refreshed September 2026

Top 25 Vulnerability management companies based in the Netherlands

RevenueBase identified 129 vulnerability management companies headquartered in the Netherlands as of September 2026 and tracks 870 professional contacts across them, including 202 with verified work emails. Amsterdam is the largest hub.

This list covers vulnerability 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 22, 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 22, 2026 86% judged on-target in blind review
129Companies
870Contacts tracked
202Verified emails
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The 25 largest vulnerability management companies based in the Netherlands

Ranked by team size
Top 25 of 129 vulnerability management companies based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to vulnerability 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 evidence3447gg, NetherlandsHQ checked Sep 22, 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 22, 2026
2Indirect evidenceDelft, NetherlandsHQ checked Sep 22, 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 22, 2026
3Indirect evidenceRotterdam, NetherlandsHQ checked Sep 22, 202611-5023 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceLeiden, NetherlandsHQ checked Sep 22, 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 22, 2026
5Indirect evidenceLeiderdorp, NetherlandsHQ checked Sep 22, 202611-5016 contacts →

Indirect evidence

“REQON is gespecialiseerd in het uitvoeren van technische beveiligingsonderzoeken in de vorm van (maatwerk) penetratietesten en exposure onderzoeken.”

Source: RevenueBase Database · checked Sep 22, 2026
6Indirect evidenceUtrecht, NetherlandsHQ checked Sep 22, 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 22, 2026
7Indirect evidenceLopik, NetherlandsHQ checked Sep 22, 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 22, 2026
8Indirect evidenceRotterdam, NetherlandsHQ checked Sep 22, 202611-5014 contacts →

Indirect 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 22, 2026
9Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 22, 20261-1011 contacts →

Indirect evidence

“Sekurno is a cybersecurity company that provides security services beyond mere compliance.”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidenceCapelle Aan Den Ijssel, NetherlandsHQ checked Sep 22, 20261-1011 contacts →

Indirect evidence

“Cyber7 Cyber Security Consultancy”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceBleskensgraaf, NetherlandsHQ checked Sep 22, 20261-1010 contacts →

Indirect evidence

“Cyber Cloud is een jong, ambitieus en innovatief bedrijf, gespecialiseerd in het uitvoeren van technische testen met als doel kwetsbaarheden in uw (web/mobiele)applicaties…”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidenceRoelofarendsveen, NetherlandsHQ checked Sep 22, 20261-1010 contacts →

Indirect evidence

“Hoe vatbaar is jouw organisatie voor hacks?”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceBreda, NetherlandsHQ checked Sep 22, 20261-109 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceRotterdam, NetherlandsHQ checked Sep 22, 202611-509 contacts →

Indirect evidence

“Your IT infrastructure is essential to your operation.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceZoetermeer, NetherlandsHQ checked Sep 22, 20261-109 contacts →

Indirect evidence

“Zoeken naar verbinding, en het bieden van totaaloplossingen, dat is waar wij continu mee bezig zijn.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceZevenbergen, NetherlandsHQ checked Sep 22, 202611-507 contacts →

Indirect evidence

“With Attic, the hacking experts from Zolder provide organizations with high-end cybersecurity operations.”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceIjsselstein, NetherlandsHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“NetBoss is committed to assisting companies, in the era of a growing number of Artificial Intelligence solutions, to understand potential cybersecurity risks that could directly…”

Source: RevenueBase Database · checked Sep 22, 2026
18Indirect evidenceAlmere, NetherlandsHQ checked Sep 22, 202611-506 contacts →

Indirect evidence

“Rootsec brengt aan de hand van Penetratietesten de risico’s en kwetsbaarheden binnen uw IT-omgeving in kaart.”

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceAmsterdam, NetherlandsHQ checked Sep 22, 20261-105 contacts →

Partial evidence

“The Catcher24 Scanner identifies vulnerabilities so you will quickly know when you are at risk.”

Source: RevenueBase Database · checked Sep 22, 2026
20Indirect evidenceAn, NetherlandsHQ checked Sep 22, 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 22, 2026
21Indirect evidenceIjsselstein, NetherlandsHQ checked Sep 22, 20261-104 contacts →

Indirect evidence

“Titanium24 is dé partner op het gebied van cybersecurity voor bedrijven die de beveiliging van hun digitale infrastructuur serieus nemen.”

Source: RevenueBase Database · checked Sep 22, 2026
22Indirect evidenceVeghel, NetherlandsHQ checked Sep 22, 20261-104 contacts →

Indirect evidence

“Calvo Advies is gespecialiseerd in bedrijfszekerheid.”

Source: RevenueBase Database · checked Sep 22, 2026
23Partial evidenceOud-beijerland, NetherlandsHQ checked Sep 22, 20261-104 contacts →

Partial evidence

“Bij Experiensys combineren we diepgaande expertise in cybersecurity met uitgebreide ervaring in IT management om een robuuste verdediging te bieden tegen de steeds veranderende…”

Source: RevenueBase Database · checked Sep 22, 2026
24Partial evidenceUtrecht, NetherlandsHQ checked Sep 22, 20261-104 contacts →

Partial evidence

“ThreatLabs specializes in security assessments providing valuable insights in vulnerabilities and weaknesses as well as actionable advise to increase the security posture of IT…”

Source: RevenueBase Database · checked Sep 22, 2026
25Indirect evidenceZeewolde, NetherlandsHQ checked Sep 22, 20261-104 contacts →

Indirect evidence

“Stel je voor, ergens in het digitale universum waarin we leven, zijn er sluwe hackers die de boel willen verstoren.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 129 vulnerability management companies based in the Netherlands

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Vulnerability management companies based in the Netherlands at a glance

As of Sep 22, 2026
23.2%Verified-email coverage
6.7Average contacts per company
1-10Median size (employees)
12.4%Largest-city concentration · Amsterdam
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
97
11-50
27
51-200
3
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 129 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 vulnerability 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 “vulnerability 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 vulnerability 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 vulnerability 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, 202 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 22, 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 vulnerability 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 vulnerability management companies are there based in the Netherlands?

RevenueBase identified 129 vulnerability 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?

Surelock IT Security Services, headquartered in Woerden, tops this list with the largest team on record.

Which city has the most vulnerability management companies?

Amsterdam leads with 16 headquartered companies, followed by Rotterdam (5) and Utrecht (5).

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 202 verified decision-maker contacts tracked across these 129 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 22, 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.