Company lists · Data refreshed September 2026
Top 25 Interactive application security testing companies based in the Netherlands
RevenueBase identified 118 interactive application security testing companies headquartered in the Netherlands as of September 2026 and tracks 906 professional contacts across them, including 314 with verified work emails and 66 with mobile numbers. Amsterdam is the largest hub.
This list covers interactive application security testing 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 interactive application security testing companies based in the Netherlands
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 63 | ||||
“Test your software, not your reputation!” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 2 | 38 | ||||
“Penetration Testing | Agile Security Testing | Red Teaming Securify is a cybersecurity company with a team of professional and passionate ethical hackers, secure coding experts…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 3 | 37 | ||||
“Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 4 | 36 | ||||
“Working as ethical hackers and security researchers over the past decade we learned that online security became a Wild West for companies.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 5 | 28 | ||||
“Omdat IT van onschatbare waarde is om commerciële en maatschappelijke doelen te verwezenlijken zijn pogingen om onrechtmatige toegang tot uw informatie te krijgen helaas aan de…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 6 | RiscurePartial evidence | 25 | |||
“Riscure is an independent security laboratory founded in 2001 with customers in North America, Europe and Asia.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 7 | 24 | ||||
“LBVD is een Delfts onderzoeks- en adviesbureau gespecialiseerd in digitale veiligheid, cybersecurity (ICT-security) en informatiebeveiliging, met 20+ jaar ervaring.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 | ||||
“DongIT is an independent web security and web development company specializing in penetration testing, secure software development, and custom-built web applications.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 9 | 16 | ||||
“REQON is gespecialiseerd in het uitvoeren van technische beveiligingsonderzoeken in de vorm van (maatwerk) penetratietesten en exposure onderzoeken.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 | ||||
“Base is a niche consultancy & managed security solutions provider, offering services enabling organizations, and professionals, to build knowledge & capabilities in information…” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 11 | 12 | ||||
“Specialists from Sirius Security have all the skills to help enterprise organisations to secure their IT environment.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 12 | 11 | ||||
“We are eager to use our expertise to create a digital world where information is secure and websites are reliable.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 | ||||
“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: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 15 | 10 | ||||
“Hoe vatbaar is jouw organisatie voor hacks?” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 | ||||
“Onvio is dé specialist in het uitvoeren van Pentesten.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 17 | 8 | ||||
“Keeping your web applications secure is vitally important for business those days.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 | ||||
“With Attic, the hacking experts from Zolder provide organizations with high-end cybersecurity operations.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 | ||||
“HackDefense is sinds 2023 onderdeel van Securance.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 | ||||
“Seclinq helps organizations understand their real security posture, not just what's on paper.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 21 | 7 | ||||
“WebSec is an all-in-one security company.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 22 | 6 | ||||
“Is uw infrastructuur bestand tegen cybercrime?” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 23 | 6 | ||||
“Blueprint Security specialises in manual penetration testing and multiple IT security certification consultancy.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 | ||||
“The Catcher24 Scanner identifies vulnerabilities so you will quickly know when you are at risk.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 | ||||
“Rootsec brengt aan de hand van Penetratietesten de risico’s en kwetsbaarheden binnen uw IT-omgeving in kaart.” Source: company website · checked Sep 4, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 118 interactive application security testing companies based in the Netherlands
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Interactive application security testing companies based in the Netherlands at a glance
As of Sep 4, 2026Companies by employee count
Verified emails by last verification
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 interactive application security testing companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “interactive application security testing companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among interactive application security testing 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 an evidence 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, 314 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 4, 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.
Interactive application security testing companies by metro
- Interactive application security testing companies in Amsterdam25
Frequently asked
How many interactive application security testing companies are there based in the Netherlands?
RevenueBase identified 118 interactive application security testing 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?
Spritecloud, headquartered in Amsterdam, tops this list with the largest team on record.
Which city has the most interactive application security testing companies?
Amsterdam leads with 25 headquartered companies, followed by Eindhoven (4) and Rotterdam (4).
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 314 verified decision-maker contacts tracked across these 118 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 4, 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.
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