Company lists · Data refreshed September 2026
Top 25 Penetration testing services based in the Netherlands
RevenueBase identified 115 company matches for penetration testing services associated with the Netherlands as of September 2026 and tracks 809 professional contacts across them, including 210 with verified work emails. Amsterdam is the largest hub.
This list covers company matches for penetration testing 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 September 21, 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.
The 25 largest penetration testing services based in the Netherlands
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 37 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 34 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 25 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 23 contacts → | ||||
Exact match “ThreadStone is uw toonaangevende specialist op het gebied van cybersecurity.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 18 contacts → | ||||
Exact match “DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 16 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 11 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 11 contacts → | ||||
Exact match “Sekurno is a cybersecurity company that provides security services beyond mere compliance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “Cyber7 Cyber Security Consultancy” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 10 contacts → | ||||
Exact match “Cyber Security Challengers (CSC) is uw onafhankelijke cybersecurity expert en dienstverlener.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 10 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Cyver Core is the Pentest Operating System built for offensive security teams.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “Hoe vatbaar is jouw organisatie voor hacks?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “Onvio is dé specialist in het uitvoeren van Pentesten.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 9 contacts → | ||||
Exact match “Qualityhouse heet sinds 1 januari 2014 Centric.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 8 contacts → | ||||
Exact match “Als onderdeel van de Stratis Groep levert nSEC/Resilience hoogwaardige diensten op het gebied van Penetratietesten, Security Awareness, Red Teaming, Cloud Security Audits en…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 8 contacts → | ||||
Exact match “WebSec is an all-in-one security company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 7 contacts → | ||||
Exact match “With Attic, the hacking experts from Zolder provide organizations with high-end cybersecurity operations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “HackDefense is sinds 2023 onderdeel van Securance.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 6 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 6 contacts → | ||||
Exact match “Is uw infrastructuur bestand tegen cybercrime?” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 6 contacts → | ||||
Exact match “Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 5 contacts → | ||||
Exact match “The Catcher24 Scanner identifies vulnerabilities so you will quickly know when you are at risk.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 5 contacts → | ||||
Exact match “Security Reporter is an all-in-one pentest reporting workspace designed to streamline and elevate your entire reporting process.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 5 contacts → | ||||
Exact match “Shellback is an enthusiastic and dedicated team of security specialists based in Weert.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “penetration testing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 115 penetration testing services based in the Netherlands
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Penetration testing services based in the Netherlands at a glance
As of Sep 21, 2026Companies by employee count
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 115 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 “penetration testing 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 210 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 September 21, 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 “penetration testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many penetration testing services are there based in the Netherlands?
RevenueBase identified 115 company matches for penetration testing services associated with the Netherlands as of September 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 penetration testing services?
Amsterdam leads with 16 company records, followed by Rotterdam (6) and Eindhoven (4).
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 210 professional contacts with verified work emails tracked across these 115 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 September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 115 penetration testing services based in the Netherlands. Start with a free account, no credit card.
Download this list →Related lists
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- Penetration testing services based in Belgium
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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.
More company lists
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- New lists
- Penetration testing services based in Ahmedabad, India
- Penetration testing services based in Bangalore, India
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Company intelligence · public preview
Top 25 penetration testing services based in the Netherlands
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 115 matching company records for penetration testing services based in the Netherlands, with 809 tracked contacts and 210 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 penetration testing services based in the Netherlands
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Surelock IT Security Servicessurelock.nlHQ: 3447gg, NetherlandsReported employees: 11-50 | 3447gg, Netherlands | 11-50 | Exact match | 37 contacts → |
“Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Securifysecurify.nlHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 34 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  LBVDlbvd.nlHQ: Delft, NetherlandsReported employees: 11-50 | Delft, Netherlands | 11-50 | Exact match | 25 contacts → |
“LBVD is een Delfts onderzoeks- en adviesbureau gespecialiseerd in digitale veiligheid, cybersecurity (ICT-security) en informatiebeveiliging, met 20+ jaar ervaring.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Threadstone Cyber Securitythreadstone.euHQ: Rotterdam, NetherlandsReported employees: 11-50 | Rotterdam, Netherlands | 11-50 | Exact match | 23 contacts → |
“ThreadStone is uw toonaangevende specialist op het gebied van cybersecurity.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Dongitdongit.euHQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 18 contacts → |
“DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Reqon B.Vreqon.nlHQ: Leiderdorp, NetherlandsReported employees: 11-50 | Leiderdorp, Netherlands | 11-50 | Exact match | 16 contacts → |
“REQON is gespecialiseerd in het uitvoeren van technische beveiligingsonderzoeken in de vorm van (maatwerk) penetratietesten en exposure onderzoeken.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Secwatch B.Vsecwatch.nlHQ: Almere, NetherlandsReported employees: 11-50 | Almere, Netherlands | 11-50 | Exact match | 11 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Sekurno Cybersecuritysekurno.comHQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 11 contacts → |
“Sekurno is a cybersecurity company that provides security services beyond mere compliance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cyber7cyber7.nlHQ: Capelle Aan Den Ijssel, NetherlandsReported employees: 1-10 | Capelle Aan Den Ijssel, Netherlands | 1-10 | Exact match | 11 contacts → |
“Cyber7 Cyber Security Consultancy” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Cyber Security Challengerscybersecuritychallengers.nlHQ: Abcoude, NetherlandsReported employees: 11-50 | Abcoude, Netherlands | 11-50 | Exact match | 10 contacts → |
“Cyber Security Challengers (CSC) is uw onafhankelijke cybersecurity expert en dienstverlener.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Cyber Cloudcybercloud.ccHQ: Bleskensgraaf, NetherlandsReported employees: 1-10 | Bleskensgraaf, Netherlands | 1-10 | Exact match | 10 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | cyver.iocore.cyver.io HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 10 contacts → |
“Cyver Core is the Pentest Operating System built for offensive security teams.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Linksecurelinksecure.nlHQ: Roelofarendsveen, NetherlandsReported employees: 1-10 | Roelofarendsveen, Netherlands | 1-10 | Exact match | 10 contacts → |
“Hoe vatbaar is jouw organisatie voor hacks?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  ONVIOonvio.nlHQ: Utrecht, NetherlandsReported employees: 11-50 | Utrecht, Netherlands | 11-50 | Exact match | 9 contacts → |
“Onvio is dé specialist in het uitvoeren van Pentesten.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Qualityhousecentric.eu HQ: Ijsselstein, NetherlandsReported employees: 51-200 | Ijsselstein, Netherlands | 51-200 | Exact match | 9 contacts → |
“Qualityhouse heet sinds 1 januari 2014 Centric.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Nsec Resiliencensec-resilience.com HQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 8 contacts → |
“Als onderdeel van de Stratis Groep levert nSEC/Resilience hoogwaardige diensten op het gebied van Penetratietesten, Security Awareness, Red Teaming, Cloud Security Audits en…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Websec B.Vwebsec.nlHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 8 contacts → |
“WebSec is an all-in-one security company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Attic Securityatticsecurity.comHQ: Zevenbergen, NetherlandsReported employees: 11-50 | Zevenbergen, Netherlands | 11-50 | Exact match | 7 contacts → |
“With Attic, the hacking experts from Zolder provide organizations with high-end cybersecurity operations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Hackdefensesecurance.comHQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 7 contacts → |
“HackDefense is sinds 2023 onderdeel van Securance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Rootsecrootsec.nlHQ: Almere, NetherlandsReported employees: 11-50 | Almere, Netherlands | 11-50 | Exact match | 6 contacts → |
“Rootsec brengt aan de hand van Penetratietesten de risico’s en kwetsbaarheden binnen uw IT-omgeving in kaart.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Secured By Designsecuredbydesign.nlHQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 6 contacts → |
“Is uw infrastructuur bestand tegen cybercrime?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Blueprint Cyber Securityblueprintsecurity.nlHQ: The Hague, NetherlandsReported employees: 11-50 | The Hague, Netherlands | 11-50 | Exact match | 6 contacts → |
“Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Catcher24catcher24.comHQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 5 contacts → |
“The Catcher24 Scanner identifies vulnerabilities so you will quickly know when you are at risk.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Security Reportersecurityreporter.app HQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 5 contacts → |
“Security Reporter is an all-in-one pentest reporting workspace designed to streamline and elevate your entire reporting process.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Shellbackshellback.nlHQ: Weert, NetherlandsReported employees: 1-10 | Weert, Netherlands | 1-10 | Exact match | 5 contacts → |
“Shellback is an enthusiastic and dedicated team of security specialists based in Weert.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 115 company matches
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Penetration testing services: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
115 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 115 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for penetration testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many penetration testing services did RevenueBase find based in the Netherlands?
The saved snapshot records 115 matching company records, 809 tracked contacts and 210 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Penetration testing services by geography
- Penetration testing services based in Ahmedabad, India
- Penetration testing services based in Bangalore, India
- Penetration testing services based in Pune, India
- Penetration testing services based in Austin, United States
- Penetration testing services based in New York, United States
- Penetration testing services based in San Francisco, United States
- Penetration testing services based in Australia
- Penetration testing services based in Austria
- Penetration testing services based in Belgium
- Penetration testing services based in Brazil
- Penetration testing services based in Canada
- Penetration testing services based in Colombia
Cite this list
RevenueBase Data Team. Top 25 penetration testing services based in the Netherlands. Snapshot: September 21, 2026. https://revenuebase.ai/companies/penetration-testing-services/netherlands.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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Company intelligence · public preview
Top 25 penetration testing services based in the Netherlands
RevenueBase records 115 matching company records for penetration testing services based in the Netherlands, with 809 tracked contacts and 210 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 penetration testing services based in the Netherlands
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Surelock IT Security Servicessurelock.nl HQ: 3447gg, NetherlandsReported employees: 11-50 | 3447gg, Netherlands | 11-50 | Exact match | 37 contacts → |
“Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Securifysecurify.nl HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 34 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | LBVDlbvd.nl HQ: Delft, NetherlandsReported employees: 11-50 | Delft, Netherlands | 11-50 | Exact match | 25 contacts → |
“LBVD is een Delfts onderzoeks- en adviesbureau gespecialiseerd in digitale veiligheid, cybersecurity (ICT-security) en informatiebeveiliging, met 20+ jaar ervaring.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Threadstone Cyber Securitythreadstone.eu HQ: Rotterdam, NetherlandsReported employees: 11-50 | Rotterdam, Netherlands | 11-50 | Exact match | 23 contacts → |
“ThreadStone is uw toonaangevende specialist op het gebied van cybersecurity.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Dongitdongit.eu HQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 18 contacts → |
“DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Reqon B.Vreqon.nl HQ: Leiderdorp, NetherlandsReported employees: 11-50 | Leiderdorp, Netherlands | 11-50 | Exact match | 16 contacts → |
“REQON is gespecialiseerd in het uitvoeren van technische beveiligingsonderzoeken in de vorm van (maatwerk) penetratietesten en exposure onderzoeken.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Secwatch B.Vsecwatch.nl HQ: Almere, NetherlandsReported employees: 11-50 | Almere, Netherlands | 11-50 | Exact match | 11 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sekurno Cybersecuritysekurno.com HQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 11 contacts → |
“Sekurno is a cybersecurity company that provides security services beyond mere compliance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cyber7cyber7.nl HQ: Capelle Aan Den Ijssel, NetherlandsReported employees: 1-10 | Capelle Aan Den Ijssel, Netherlands | 1-10 | Exact match | 11 contacts → |
“Cyber7 Cyber Security Consultancy” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Cyber Security Challengerscybersecuritychallengers.nl HQ: Abcoude, NetherlandsReported employees: 11-50 | Abcoude, Netherlands | 11-50 | Exact match | 10 contacts → |
“Cyber Security Challengers (CSC) is uw onafhankelijke cybersecurity expert en dienstverlener.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cyber Cloudcybercloud.cc HQ: Bleskensgraaf, NetherlandsReported employees: 1-10 | Bleskensgraaf, Netherlands | 1-10 | Exact match | 10 contacts → |
“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 description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | cyver.iocore.cyver.io HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 10 contacts → |
“Cyver Core is the Pentest Operating System built for offensive security teams.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Linksecurelinksecure.nl HQ: Roelofarendsveen, NetherlandsReported employees: 1-10 | Roelofarendsveen, Netherlands | 1-10 | Exact match | 10 contacts → |
“Hoe vatbaar is jouw organisatie voor hacks?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | ONVIOonvio.nl HQ: Utrecht, NetherlandsReported employees: 11-50 | Utrecht, Netherlands | 11-50 | Exact match | 9 contacts → |
“Onvio is dé specialist in het uitvoeren van Pentesten.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Qualityhousecentric.eu HQ: Ijsselstein, NetherlandsReported employees: 51-200 | Ijsselstein, Netherlands | 51-200 | Exact match | 9 contacts → |
“Qualityhouse heet sinds 1 januari 2014 Centric.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Nsec Resiliencensec-resilience.com HQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 8 contacts → |
“Als onderdeel van de Stratis Groep levert nSEC/Resilience hoogwaardige diensten op het gebied van Penetratietesten, Security Awareness, Red Teaming, Cloud Security Audits en…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Websec B.Vwebsec.nl HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 8 contacts → |
“WebSec is an all-in-one security company.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Attic Securityatticsecurity.com HQ: Zevenbergen, NetherlandsReported employees: 11-50 | Zevenbergen, Netherlands | 11-50 | Exact match | 7 contacts → |
“With Attic, the hacking experts from Zolder provide organizations with high-end cybersecurity operations.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Hackdefensesecurance.com HQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 7 contacts → |
“HackDefense is sinds 2023 onderdeel van Securance.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Rootsecrootsec.nl HQ: Almere, NetherlandsReported employees: 11-50 | Almere, Netherlands | 11-50 | Exact match | 6 contacts → |
“Rootsec brengt aan de hand van Penetratietesten de risico’s en kwetsbaarheden binnen uw IT-omgeving in kaart.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Secured By Designsecuredbydesign.nl HQ: Amsterdam, NetherlandsReported employees: 11-50 | Amsterdam, Netherlands | 11-50 | Exact match | 6 contacts → |
“Is uw infrastructuur bestand tegen cybercrime?” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Blueprint Cyber Securityblueprintsecurity.nl HQ: The Hague, NetherlandsReported employees: 11-50 | The Hague, Netherlands | 11-50 | Exact match | 6 contacts → |
“Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Catcher24catcher24.com HQ: Amsterdam, NetherlandsReported employees: 1-10 | Amsterdam, Netherlands | 1-10 | Exact match | 5 contacts → |
“The Catcher24 Scanner identifies vulnerabilities so you will quickly know when you are at risk.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Security Reportersecurityreporter.app HQ: Leiden, NetherlandsReported employees: 11-50 | Leiden, Netherlands | 11-50 | Exact match | 5 contacts → |
“Security Reporter is an all-in-one pentest reporting workspace designed to streamline and elevate your entire reporting process.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Shellbackshellback.nl HQ: Weert, NetherlandsReported employees: 1-10 | Weert, Netherlands | 1-10 | Exact match | 5 contacts → |
“Shellback is an enthusiastic and dedicated team of security specialists based in Weert.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 115 company matches
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Penetration testing services: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
115 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 115 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for penetration testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many penetration testing services did RevenueBase find based in the Netherlands?
The saved snapshot records 115 matching company records, 809 tracked contacts and 210 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 penetration testing services based in the Netherlands. Snapshot: September 21, 2026. https://revenuebase.ai/companies/penetration-testing-services/netherlands.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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