Company lists · Data refreshed September 2026
Top 25 Cyber security firms based in the Netherlands
RevenueBase identified 350 cyber security firms headquartered in the Netherlands as of September 2026 and tracks 4,687 professional contacts across them, including 1,878 with verified work emails. Amsterdam is the largest hub.
This list covers cyber security firms 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 14, 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.
The 25 largest cyber security firms based in the Netherlands
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,026 contacts → | ||||
Indirect evidence “Irdeto, a CANAL+ company, is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 233 contacts → | ||||
Partial evidence “Fox-IT prevents, solves and mitigates the most serious cyber threats with innovative solutions for government, defense, law enforcement, critical infrastructure, banking, and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 217 contacts → | ||||
Strong evidence “Eye Security protects small and medium-sized European enterprises from cyber threats and the high costs that follow after a successful attack.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 213 contacts → | ||||
Strong evidence “Northwave Northwave offers an Intelligent combination of cyber security services to protect your information.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 152 contacts → | ||||
Indirect evidence “Wij ontwerpen, implementeren en beheren veilige IT-infrastructuur en Cybersecurity Services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 113 contacts → | ||||
Indirect evidence “DataExpert’s mission is to empower law enforcement, military, intelligence agencies, customs, other government organizations, banks, telecommunication companies, insurance…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 104 contacts → | ||||
Partial 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 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 91 contacts → | ||||
Partial evidence “Tesorion is een Nederlandse, onafhankelijke Managed Security Services Provider (MSSP).” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 81 contacts → | ||||
Indirect evidence “ON2IT is a global pure-play cybersecurity service provider.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 72 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 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 60 contacts → | ||||
Indirect evidence “Nedscaper delivers pragmatic, accessible cybersecurity services across Europe and Africa.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 51 contacts → | ||||
Indirect evidence “Group your Architects in Safety and Intelligence Group is your professional partner for legal compliance, resilient and smart networks.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 38 contacts → | ||||
Indirect evidence “Hunt & Hackett helps European companies prevent, detect and respond to today’s most advanced adversaries, safeguarding them against cyberthreats and espionage.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 37 contacts → | ||||
Partial evidence “Surelock IT Security Services helpt organisatie inzicht te krijgen in de IT-kwetsbaarheden van hun organisatie.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 35 contacts → | ||||
Partial evidence “Working as ethical hackers and security researchers over the past decade we learned that online security became a Wild West for companies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 28 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 28 contacts → | ||||
Partial evidence “Tachyon Security BV is based just outside The Hague in the Netherlands.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 27 contacts → | ||||
Indirect evidence “Rechtstreeks uw specialisten regelen bij de grootste cybersecurity-community van Nederland?” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 25 contacts → | ||||
Indirect evidence “Onze missie, visie & strategie Wij willen onze samenleving veiliger maken en dat doen we dankzij de zeer specialistische kennis van onze cybersecurity experts.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 25 contacts → | ||||
Partial 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 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 23 contacts → | ||||
Indirect evidence “Safesqr is a European, human-first cybersecurity company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 23 contacts → | ||||
Indirect evidence “ThreadStone is uw toonaangevende specialist op het gebied van cybersecurity.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 20 contacts → | ||||
Indirect evidence “Digitale veiligheid is van levensbelang voor bedrijven, de maatschappij en de mens.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 20 contacts → | ||||
Partial evidence “Want to take your company’s digital security to the next level?” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 19 contacts → | ||||
Partial evidence “Defenced is the IT security knowledge partner for large and medium-sized organizations.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cyber security firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names cyber security firms.
- Partial evidence
- Its own public description names part of cyber security firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cyber security firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 350 cyber security firms based in the Netherlands
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Cyber security firms based in the Netherlands at a glance
As of Sep 14, 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 350 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 cyber security firms, 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 “cyber security firms”. 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 cyber security firms), 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 cyber security firms, 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, 1,878 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 14, 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.
Cyber security firms by metro
- Cyber security firms in Amsterdam40
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 cyber security firms, 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 cyber security firms are there based in the Netherlands?
RevenueBase identified 350 cyber security firms 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?
Irdeto, headquartered in Ls, tops this list with the largest team on record.
Which city has the most cyber security firms?
Amsterdam leads with 40 headquartered companies, followed by The Hague (14) and Utrecht (12).
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 1,878 verified decision-maker contacts tracked across these 350 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 14, 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 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.
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