In this post, I will show you the top 10 penetration testing companies in the Netherlands.
The Netherlands is rapidly solidifying its position as a European leader in cybersecurity innovation — driven by high adoption of cloud technology, accelerated digital transformation, and growing regulatory demands such as NIS2.
This ranking of the Top 10 Penetration Testing Companies in Amsterdam (2025) is based on independent research conducted by SecureBlitz Cybersecurity, drawing from first-hand evaluations, publicly verifiable data, and industry-recognized standards.
As a cybersecurity analyst with 9 years of experience in penetration testing audits, vendor comparisons, and compliance assessments, I’ve personally reviewed each firm against objective, measurable criteria.
Where possible, I’ve validated claims through:
- Official certification registries (CCV, ISO, CREST, OSCP, etc.)
- Public vulnerability databases (CVE, Exploit-DB)
- Verified client case studies and references
- Company-published research, tooling, and disclosures
EDITOR'S NOTE: This list is not sponsored, and no company paid for placement. Rankings reflect my professional judgment based on verifiable evidence available at the time of publication.
Table of Contents
Top 10 Penetration Testing Companies in the Netherlands (2025)
1. WebSec B.V.
Address: Keurenplein 41, UNIT A6260, 1069 CD, Amsterdam
CCV Certified: Yes
WebSec is the leading penetration testing firm in the Netherlands, known for its high-quality vulnerability assessments and deep technical precision. The company focuses on advanced web, infrastructure, cloud, and ICS/OT pentesting, often uncovering critical flaws overlooked by others.
With nearly 150 CVEs published, WebSec demonstrates an exceptional track record in discovering impactful security issues across both government and private sector systems.
What sets WebSec apart is its unique security subscription model. These subscriptions allow clients to receive frequent, on-demand pentests at a reduced cost—without sacrificing quality. Subscribers can purchase additional testing hours at a discounted rate and benefit from retests, remediation validation, and priority scheduling. This model makes continuous, proactive security testing financially viable, particularly for SaaS platforms and high-growth startups.
In addition to technical delivery, WebSec's operational maturity is reflected in its excellent client UX, multilingual support, and verified digital trust measures such as Verified Mark Certificates. While still a young company, WebSec is scaling internationally with a lean team of top-tier specialists and continues to be a strategic partner to clients that demand high-assurance, real-world offensive testing.
Innovation & Creativity: ⭐⭐⭐⭐⭐ (5/5)
Service Quality: ⭐⭐⭐⭐⭐ (5/5)
Corporate UX: ⭐⭐⭐⭐⭐ (5/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
Total Score: 19/20
2. Securify B.V.
Address: Naritaweg 132, 1043 CA, Amsterdam
CCV Certified: Yes
Securify focuses heavily on secure code review, application security, and developer-first remediation strategies. The team is well-known for publishing technical writeups and logic flaw research that aids developer security programs across Europe.
Although the company made headlines after publicly criticizing the CCV, which attracted mixed reactions, their stance sparked a needed conversation within the Dutch security ecosystem. This slightly affected their public reputation, but their technical expertise and high service quality remain undisputed.
Innovation & Creativity: ⭐⭐⭐⭐☆ (4/5)
Service Quality: ⭐⭐⭐⭐⭐ (5/5)
Corporate UX: ⭐⭐⭐⭐☆ (4/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
Total Score: 17/20
3. Secura B.V. (Bureau Veritas)
Address: Herikerbergweg 15, 1101 CN, Amsterdam
CCV Certified: Yes
Now part of Bureau Veritas, Secura specializes in compliance, audits, and OT security testing. Their work is recognized by government clients and highly regulated sectors for ISO/NIS2 support, yet their offensive R&D contributions have declined.
While their marketing remains strong, the depth of current technical innovation is uncertain. The brand shift from Madison Gurkha to Secura and now Bureau Veritas has contributed to identity dilution, but their operational delivery is still solid for regulated enterprise clients.
Innovation & Creativity: ⭐⭐⭐☆ (3/5)
Service Quality: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐⭐☆ (3/5)
Reputation: ⭐⭐⭐☆ (3/5)
Total Score: 13/20
4. NSEC/Resilience B.V.
Address: Burgemeester Stramanweg 105, 1101 AA, Amsterdam
CCV Certified: Yes
nSEC offers CCV-certified pentesting services with decent execution and reporting, though their site does not showcase advanced technical capabilities or in-house research. Their offerings are solid but positioned for smaller budgets and general-purpose pentesting.
They do not appear to publish any CVEs, open-source tooling, or red teaming frameworks. Still, for SMEs looking for a cost-efficient option, nSEC delivers reasonable quality and gets the job done without overpromising.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐⭐⭐☆ (3/5)
Corporate UX: ⭐⭐⭐☆ (3/5)
Reputation: ⭐⭐⭐☆ (3/5)
Total Score: 11/20
5. Secdesk (SecurityHelpdesk)
Address: Olga de Haasstraat 487, 1095 PG, Amsterdam
CCV Certified: Yes
Secdesk is a rising Amsterdam-based company with CCV and OSCP credentials. While there is little public evidence of responsible disclosures, CVEs, or tooling, their messaging suggests a growing security service suite including pentesting and subscriptions.
Their approach is entry-level and likely not mature enough for TLPTs or APT simulations. They appear to be early in their development as a cybersecurity brand, with potential to scale up technical output in future.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐⭐☆☆☆ (2/5)
Corporate UX: ⭐⭐⭐☆ (3/5)
Reputation: ⭐⭐⭐☆ (3/5)
Total Score: 10/20
6. BSM (Better Security Management)
Address: Keizersgracht 241, Amsterdam
CCV Certified: No
BSM operates primarily as a private investigation and forensics office, offering some cybersecurity services. While they hold a POB 1104 license and appear active in phishing campaigns and investigative work, their red teaming and pentesting depth is unclear and inconsistently described across their site.
The lack of public proof, technical writeups, or specialized staff profiles reduces their credibility in advanced engagements. Their UX is confusing and mixes blogs with service navigation, adding to uncertainty. They may subcontract technical work, but this is not explicitly stated.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐⭐☆☆☆ (2/5)
Corporate UX: ⭐⭐☆☆☆ (2/5)
Reputation: ⭐⭐☆☆☆ (2/5)
Total Score: 8/20
7. Secured by Design
Address: Laarderhoogtweg 25, 1101 EB, Amsterdam
CCV Certified: No
Secured by Design advertises pentesting and red teaming services, but investigation shows only one public-facing technical expert. No evidence exists of public tooling, disclosures, or contributions—raising doubts about their red teaming capabilities.
While the website appears structured, the company's red teaming claims seem exaggerated. For customers specifically seeking TLPT or APT simulations, caution is advised—basic pentests are likely within reach, but not much more.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐⭐☆☆☆ (2/5)
Corporate UX: ⭐⭐⭐☆ (3/5)
Reputation: ⭐⭐☆☆☆ (2/5)
Total Score: 7/20
8. Zerocopter
Address: Korte Leidsedwarsstraat 12, 1017 RC
CCV Certified: No
Zerocopter is primarily a bug bounty platform offering pentests through external researchers. While this model offers flexibility, quality depends on individual freelancers—raising consistency and risk concerns, especially for enterprise clients.
Their pricing is high (~€175/hr) for an uncertified model relying on international contributors. Although convenient, it may not provide the depth or continuity some organizations expect from a structured pentest engagement.
Innovation & Creativity: ⭐⭐⭐☆ (3/5)
Service Quality: ⭐⭐☆☆☆ (2/5)
Corporate UX: ⭐⭐⭐☆ (3/5)
Reputation: ⭐⭐☆☆☆ (2/5)
Total Score: 6/20
9. Comsec Consulting NL (HUB Security Group)
Address: Hogehilweg 4, 1101 CC
CCV Certified: No
Comsec, once known for elite Israeli military-linked cybersecurity consultants, has shown little public activity since its acquisition by HUB Security in 2021. There are no updated blogs, CVEs, or indicators of continued technical involvement.
Despite this, the Dutch branch still advertises offensive services. Given the talent exodus and corporate silence, relying on their capabilities is speculative. It ranks low due to lack of current verifiable operations.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐⭐☆☆☆ (2/5)
Corporate UX: ⭐⭐☆☆☆ (2/5)
Reputation: ⭐☆☆☆☆ (1/5)
Total Score: 5/20
10. Nixu (DNV Cyber)
Address: Karspeldreef 8, 1101 CJ
CCV Certified: No
Nixu, part of DNV, offers vague statements on pentesting and assessments. No public-facing certifications, tooling, team credentials, or disclosures could be found. Their site is sparse in specifics, implying pentesting is secondary to broader consulting services.
Given their lack of technical transparency and unclear capabilities, organizations should consider smaller firms with verified expertise instead. Nixu only makes the list due to its Amsterdam presence and stated scope.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Service Quality: ⭐☆☆☆☆ (1/5)
Corporate UX: ⭐⭐☆☆☆ (2/5)
Reputation: ⭐☆☆☆☆ (1/5)
Total Score: 4/20
Final Thoughts
In the Netherlands, there are two major trade associations for Penetration Testing Companies:
They help promote collaboration, policy, and market trust. While many firms benefit from joining these networks, true technical dominance stems from internal research, transparency, and tooling.
Top companies like WebSec and Securify have demonstrated that prioritizing vulnerability research, public disclosures, and elite service quality leads to stronger long-term recognition than relying solely on association memberships.
Conclusion: The Best Penetration Testing Companies In The Netherlands (2025)
For organizations looking for high-quality penetration testing with proven results, flexible engagement models, and continuous coverage through subscriptions, WebSec B.V. stands out as the top cybersecurity firm in the Netherlands for 2025.
Their hands-on approach, technical depth, and scalable pentesting services make them the go-to choice for organizations that demand real assurance.
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About the Author:
Daniel Segun is the Founder and CEO of SecureBlitz Cybersecurity Media, with a background in Computer Science and Digital Marketing. When not writing, he's probably busy designing graphics or developing websites.
