Company lists · Data refreshed November 2026

Top 25 IT security audit services based in the Netherlands

RevenueBase identified 83 company matches for IT security audit services associated with the Netherlands as of November 2026 and tracks 380 professional contacts across them, including 145 with verified work emails. Amsterdam is the largest hub.

This list covers company matches for IT security audit services associated with the Netherlands, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
83Companies
380Contacts tracked
145Verified emails
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The 25 largest IT security audit services based in the Netherlands

Ranked by team size
Top 25 of 83 company matches for IT security audit services based in the Netherlands, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchDelft, NetherlandsHQ recorded Nov 5, 202611-5030 contacts →

Exact match

“LBVD is een Delfts onderzoeks- en adviesbureau gespecialiseerd in digitale veiligheid, cybersecurity (ICT-security) en informatiebeveiliging, met 20+ jaar ervaring.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchLeuvenheim, NetherlandsHQ recorded Nov 5, 202611-5025 contacts →

Exact match

“In the 13 years that InAudit has been in existence, we have grown from a provider of internal audit services into a group that does much more than that.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchBreda, NetherlandsHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“2-Control is an IT audit organization and offers support in providing insight into and improving the reliability of automated information.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchLeiden, NetherlandsHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“DongIT is an independent Dutch cybersecurity company, founded in 2012 and based in Leiden.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchZwolle, NetherlandsHQ recorded Nov 5, 20261-1016 contacts →

Exact match

“Argis IT Consultants is your partner in IT Control.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchLeiderdorp, NetherlandsHQ recorded Nov 5, 202611-5015 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchOosterhout, NetherlandsHQ recorded Nov 5, 202611-5015 contacts →

Exact match

“Provide total peace of mind in the digital field.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchVlijmen, NetherlandsHQ recorded Nov 5, 202611-5013 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchRotterdam, NetherlandsHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“Risguard was founded by Thom, Wolbert and Jurgen, three experienced IT-audit professionals with over 25 years of combined experience in IT audit, IT risk management & IT…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchAlkmaar, NetherlandsHQ recorded Nov 5, 20261-1013 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSliedrecht, NetherlandsHQ recorded Nov 5, 202651-20011 contacts →

Exact match

“Hoek en Blok.IT is de professionele IT dienstverlener van Hoek en Blok.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchHazerswoude Rijndijk, NetherlandsHQ recorded Nov 5, 202611-509 contacts →

Exact match

“Noordbeek B.V.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchRoelofarendsveen, NetherlandsHQ recorded Nov 5, 20261-109 contacts →

Exact match

“Hoe vatbaar is jouw organisatie voor hacks?”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchVlaardingen, NetherlandsHQ recorded Nov 5, 20261-108 contacts →

Exact match

“Grip IT Consultancy is gespecialiseerd in het geven van advies op het gebied van de AVG, IT-beleid, IT-infrastructuur en Security, het uitvoeren van pentesten op klantomgevingen…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchThe Hague, NetherlandsHQ recorded Nov 5, 202611-507 contacts →

Exact match

“Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchBodegraven, NetherlandsHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Met meer dan 15 jaar ervaring op het gebied van informatiebeveiliging en privacy ondersteunen we organisaties in het grip krijgen op en continu verbeteren van de beveiliging van…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchHarlingen, NetherlandsHQ recorded Nov 5, 20261-105 contacts →

Exact match

“NoK IB specialiseert zich in informatiebeveiliging: Security, Privacy & IT-audits.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchUtrecht, NetherlandsHQ recorded Nov 5, 20261-104 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchZeewolde, NetherlandsHQ recorded Nov 5, 20261-103 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Bij Socured geloven we niet in vendor-gedreven advies of losse oplossingen.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBeuningen, NetherlandsHQ recorded Nov 5, 20261-102 contacts →

Exact match

“LVL10 (Level Ten) biedt diensten op het gebied van informatie beveiliging met als doel om de Beschikbaarheid, Integriteit en Vertrouwelijkheid van uw systemen, processen en…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchHengelo, NetherlandsHQ recorded Nov 5, 20261-102 contacts →

Exact match

“IT Risk Control is een onafhankelijke en professionele dienstverlener van IT-auditdiensten en IT-adviesdiensten met ervaren en gecertificeerd medewerkers op het gebied van…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchBest, NetherlandsHQ recorded Nov 5, 20261-101 contacts →

Exact match

“Pure Networks & Security is mainly a independent consulting company for networking and security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchVoorburg, NetherlandsHQ recorded Nov 5, 20261-101 contacts →

Exact match

“Assess and optimize the effectiveness of your Security Controls.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchMaasland, NetherlandsHQ recorded Nov 5, 20261-101 contacts →

Exact match

“SeKuRiGo is met 10 jaar ervaring een betrouwbare partner op het gebied van informatiebeveiliging, risicomanagement en IT-audit.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 83 IT security audit services based in the Netherlands

See the full list, filter by size, metro and specialty, and access 145 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security audit services based in the Netherlands at a glance

As of Nov 5, 2026
38.2%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
10.8%Largest-city concentration · Amsterdam
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
66
11-50
16
51-200
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 83 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the Netherlands whose business descriptions match “IT security audit services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 145 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “IT security audit services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT security audit services are there based in the Netherlands?

RevenueBase identified 83 company matches for IT security audit services associated with the Netherlands as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

LBVD tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most IT security audit services?

Amsterdam leads with 9 company records, followed by The Hague (7) and Rotterdam (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 145 professional contacts with verified work emails tracked across these 83 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.