Company lists · Data refreshed September 2026

Top 25 Vulnerability management staffing companies based in the Netherlands

RevenueBase identified 129 vulnerability management staffing companies headquartered in the Netherlands as of September 2026 and tracks 1,470 professional contacts across them, including 384 with verified work emails. Amsterdam is the largest hub.

This list covers vulnerability management staffing 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
129Companies
1,470Contacts tracked
384Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest vulnerability management staffing companies based in the Netherlands

Ranked by team size
Top 25 of 129 vulnerability management staffing 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 vulnerability management staffing 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 evidenceGouda, NetherlandsHQ checked Sep 29, 2026201-500364 contacts →

Indirect evidence

“Experis helpt organisaties om technologie écht te laten werken.”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceDelft, NetherlandsHQ checked Sep 29, 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 29, 2026
3Indirect evidenceThe Hague, NetherlandsHQ checked Sep 29, 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 29, 2026
4Indirect evidenceDe Bilt, NetherlandsHQ checked Sep 29, 202651-20050 contacts →

Indirect evidence

“Dignitas: Meer dan een dienstverlener, een partner in groei!”

Source: RevenueBase Database · checked Sep 29, 2026
5Indirect evidence3447gg, NetherlandsHQ checked Sep 29, 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 29, 2026
6Indirect evidenceRijswijk, NetherlandsHQ checked Sep 29, 202611-5029 contacts →

Indirect evidence

“Het succes van organisaties hangt steeds meer af van de prestaties van de IT-afdeling.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceDeventer, NetherlandsHQ checked Sep 29, 202651-20027 contacts →

Indirect evidence

“Rechtstreeks uw specialisten regelen bij de grootste cybersecurity-community van Nederland?”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceDelft, NetherlandsHQ checked Sep 29, 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 29, 2026
9Indirect 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
10Indirect evidenceThe Hague, NetherlandsHQ checked Sep 29, 202611-5019 contacts →

Indirect evidence

“Bij Securesult richten we ons op het bieden van hoogwaardige informatiebeveiligingsoplossingen voor organisaties van elke omvang.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceLeiden, NetherlandsHQ checked Sep 29, 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 29, 2026
12Indirect evidenceLopik, NetherlandsHQ checked Sep 29, 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 29, 2026
13Indirect evidenceRotterdam, NetherlandsHQ checked Sep 29, 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 29, 2026
14Partial evidenceAlmere, NetherlandsHQ checked Sep 29, 202611-5011 contacts →

Partial evidence

“Even when your security is well underpinned, it remains important to remain alert to possible vulnerabilities, to the system's alerting and response capabilities and to the…”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 29, 20261-1011 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceAbcoude, NetherlandsHQ checked Sep 29, 202611-5010 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceBleskensgraaf, NetherlandsHQ checked Sep 29, 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 29, 2026
18Indirect evidenceRoelofarendsveen, NetherlandsHQ checked Sep 29, 20261-1010 contacts →

Indirect evidence

“Hoe vatbaar is jouw organisatie voor hacks?”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 29, 202611-5010 contacts →

Indirect evidence

“We connect organizations with proven expertise.”

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceBreda, NetherlandsHQ checked Sep 29, 20261-109 contacts →

Indirect evidence

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

Indirect evidence

“Onvio is dé specialist in het uitvoeren van Pentesten.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceZoetermeer, NetherlandsHQ checked Sep 29, 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 29, 2026
23Indirect evidenceThe Hague, NetherlandsHQ checked Sep 29, 20261-108 contacts →

Indirect evidence

“RedVenture is gespecialiseerd in het bemiddelen van tijdelijk en vast IT-personeel.”

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

Indirect evidence

“WebSec is an all-in-one security company.”

Source: RevenueBase Database · checked Sep 29, 2026
25Indirect evidenceZevenbergen, NetherlandsHQ checked Sep 29, 202611-507 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 129 vulnerability management staffing companies based in the Netherlands

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 384 reachable decision-makers.

Free signup · no credit card

View the full list →

Vulnerability management staffing companies based in the Netherlands at a glance

As of Sep 29, 2026
26.1%Verified-email coverage
11.4Average contacts per company
1-10Median size (employees)
16.3%Largest-city concentration · Amsterdam
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
86
11-50
34
51-200
6
201-500
3

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 staffing 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 staffing 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 staffing 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 staffing 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, 384 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 vulnerability management staffing 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 staffing companies are there based in the Netherlands?

RevenueBase identified 129 vulnerability management staffing 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?

Experis Nederland, headquartered in Diemen, tops this list with the largest team on record.

Which city has the most vulnerability management staffing companies?

Amsterdam leads with 21 headquartered companies, followed by The Hague (8) and Rotterdam (7).

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 384 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 29, 2026.

Ready to reach these companies? Verified emails and direct dials for all 129 vulnerability management staffing companies 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.