Company lists · Data refreshed November 2026

Top 25 Managed application security services based in the Netherlands

RevenueBase identified 98 company matches for managed application security services associated with the Netherlands as of November 2026 and tracks 864 professional contacts across them, including 220 with verified work emails. Amsterdam is the largest hub.

This list covers company matches for managed application security 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
98Companies
864Contacts tracked
220Verified emails
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The 25 largest managed application security services based in the Netherlands

Ranked by team size
Top 25 of 98 company matches for managed application security 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 match3447gg, NetherlandsHQ recorded Nov 5, 202611-5034 contacts →

Exact match

“Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 202611-5034 contacts →

Exact match

“Penetration Testing | Agile Security Testing | Red Teaming Securify is a cybersecurity company with a team of professional and passionate ethical hackers, secure coding experts…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact 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
4Exact matchLopik, NetherlandsHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Bij HOB ICT Security werken we dagelijks aan het versterken van de weerbaarheid van middelgrote en grote organisaties tegen alle vormen van cyberdreigingen.”

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

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchAlphen Aan Den Rijn, NetherlandsHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“APNT is your trusted IT solution partner, specializing in testing, automation, monitoring, and (cyber)security.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact 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
8Exact 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
9Exact matchBleskensgraaf, NetherlandsHQ recorded Nov 5, 20261-1013 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchThe Hague, NetherlandsHQ recorded Nov 5, 202611-5013 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact 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
12Exact matchEindhoven, NetherlandsHQ recorded Nov 5, 202611-5012 contacts →

Exact match

“We are eager to use our expertise to create a digital world where information is secure and websites are reliable.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchRotterdam, NetherlandsHQ recorded Nov 5, 202611-5011 contacts →

Exact match

“Base is a niche consultancy & managed security solutions provider, offering services enabling organizations, and professionals, to build knowledge & capabilities in information…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchAlmere, NetherlandsHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchZevenbergen, NetherlandsHQ recorded Nov 5, 202611-509 contacts →

Exact match

“Attic Security delivers Identity-First Agentic MDR for Microsoft 365.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchUtrecht, NetherlandsHQ recorded Nov 5, 202611-509 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact 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
18Exact matchReuver, NetherlandsHQ recorded Nov 5, 202611-509 contacts →

Exact match

“Keeping your web applications secure is vitally important for business those days.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 20261-108 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 202611-508 contacts →

Exact match

“SECURiMENT provides software solutions and services for security needs of your company.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchAlmere, NetherlandsHQ recorded Nov 5, 202611-507 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchRotterdam, NetherlandsHQ recorded Nov 5, 202611-507 contacts →

Exact match

“Your IT infrastructure is essential to your operation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchUtrecht, NetherlandsHQ recorded Nov 5, 20261-105 contacts →

Exact match

“Al 10 jaar is CREDS dé kennispartner op het gebied van offensieve cybersecurity-oplossingen voor organisaties waar een veilige digitale infrastructuur cruciaal is voor de…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact 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
25Exact matchAmsterdam, NetherlandsHQ recorded Nov 5, 20261-103 contacts →

Exact match

“Hackers are constantly looking for vulnerabilities.”

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

Showing 25 of 98 managed application security services based in the Netherlands

See the full list, filter by size, metro and specialty, and access 220 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Managed application security services based in the Netherlands at a glance

As of Nov 5, 2026
25.5%Verified-email coverage
8.8Average contacts per company
1-10Median size (employees)
21.4%Largest-city concentration · Amsterdam
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
60
11-50
36
51-200
1
201-500
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 98 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 “managed application security 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 220 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 “managed application security services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed application security services are there based in the Netherlands?

RevenueBase identified 98 company matches for managed application security 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?

Surelock IT Security Services tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most managed application security services?

Amsterdam leads with 21 company records, followed by Rotterdam (6) and The Hague (6).

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 220 professional contacts with verified work emails tracked across these 98 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.