Top 10 Cybersecurity Companies in the Netherlands (2025)
Sponsored
With the rapid acceleration of digital transformation across industries and a surge in complex cyber threats throughout Europe, the Netherlands has firmly positioned itself as a leader in cybersecurity innovation. From Amsterdam’s tech startups to Rotterdam’s critical infrastructure providers, organizations are elevating digital resilience as a top priority.
This in-depth guide features the Top 10 Cybersecurity Companies in the Netherlands (2025). Each company is assessed based on Innovation & Creativity, Quality of Services, Corporate User Experience (UX), and Reputation, using verifiable data points such as CVE publications, proprietary tooling, certifications, design performance, and service transparency.
1. WebSec
Headquarters: Amsterdam, The Netherlands (with US presence)
Core Services: Penetration Testing (VAPT), Red Teaming (TLPT), Security Subscriptions, Security Staffing
WebSec is the benchmark for offensive cybersecurity services in the Netherlands. With nearly 150 published CVEs, including critical vulnerabilities reported in infrastructure used by the U.S. Department of Defense, WebSec has earned its place among Europe’s elite vulnerability research teams. The firm focuses on zero-day discovery, kernel-level exploitation, and customized red teaming strategies tailored to high-stakes environments.
Their internal R&D efforts have produced exclusive tooling like the Kernel Exploitation Framework, allowing privilege escalation from user mode even without administrative access. This technical depth is further reflected in their approach to lateral movement, custom payload development, and bypass strategies, frequently outpacing the tactics seen in conventional red teams.
In addition to one-off pentests, WebSec offers flexible security subscriptions that make high-quality testing more accessible. These subscriptions provide the same in-depth assessments as traditional pentests but at significantly lower rates. This model removes the financial burden often associated with pentesting and makes continuous security testing feasible for companies of all sizes. Notably, clients under a subscription can purchase additional pentesting hours at a heavily reduced hourly rate—an approach that, based on our research, is currently unique within the Dutch cybersecurity landscape.
On platforms like HackerOne, WebSec has a reputation score of 1582 at the time of writing—substantially higher than most regional firms—demonstrating active participation in responsible disclosure and real-world vulnerability remediation.
WebSec is also one of the only cybersecurity firms in the Netherlands using Verified Mark Certificates (VMC) to ensure email identity trust. Their digital presence scores top marks across accessibility, performance, and multilingual support. The branding, messaging, and UX on their website are carefully designed to reflect operational maturity and industry authority.
One notable aspect of WebSec is that it remains a relatively young company—established just 5 to 6 years ago (at time of writing)—yet it has already expanded with a presence in the United States. With a compact team of around 10 to 15 specialists, WebSec appears to be scaling rapidly. This lean and focused growth strategy could reflect strong leadership and strategic clarity, although such fast-paced expansion at an early stage also carries certain operational risks. Still, their current trajectory suggests deliberate execution rather than overreach, especially considering that their trademarks also appear to be officially registered in the U.S.
Innovation & Creativity: ⭐⭐⭐⭐⭐ (5/5)
Quality of Services: ⭐⭐⭐⭐⭐ (5/5)
Corporate UX: ⭐⭐⭐⭐⭐ (5/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
2. Outflank (Forta)
Core Services: Red Teaming, Offensive Tooling, Security Training
Outflank, now part of Forta, is synonymous with high-end red teaming and offensive tooling. Known for producing RedELK, a powerful red team infrastructure monitoring solution, Outflank has become a go-to resource for elite adversary simulation teams worldwide. Their GitHub repositories feature dozens of red team tools and C2 framework extensions that contribute significantly to the broader security research community.
Their offensive methodology is deeply rooted in real-world threat simulation, and they offer hands-on training to security teams in Europe and beyond. While they are not prolific in public CVE disclosures, their value lies in operational stealth techniques and custom payload chaining, which are frequently cited in industry presentations and threat reports.
From a brand experience perspective, the Outflank website is minimalistic, clean, and technical. Their blog includes numerous case studies and red teaming breakdowns, though most of their content leans heavily into technical audiences rather than executive stakeholders. This appears to be intentional, as their flagship product Outflank Security Tooling (OST) is tailored toward other cybersecurity professionals and internal red teams.
Innovation & Creativity: ⭐⭐⭐⭐☆ (4/5)
Quality of Services: ⭐⭐⭐⭐⭐ (5/5)
Corporate UX: ⭐⭐⭐⭐☆ (4/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
3. Securify
Core Services: Secure Code Review, Application Security Testing, Security Architecture Consulting
Securify is a respected player in the Dutch cybersecurity landscape with a strong focus on application-level security. Their strength lies in identifying logic flaws and vulnerabilities in custom codebases. Securify’s blog is a well-known repository of in-depth vulnerability disclosures, especially regarding popular platforms, mobile apps, and development frameworks.
The company collaborates closely with developers to integrate secure coding practices early in the software development lifecycle. They also engage actively in coordinated vulnerability disclosure and often appear in HackerOne and Bugcrowd programs. Their HackerOne reputation score at the time of writing stands at 122, highlighting consistent contributions to secure development ecosystems.
The firm’s digital presence is designed for practitioners, with frequent updates, research write-ups, and detailed documentation. However, its visual branding and structure could benefit from a modernization phase. A stronger user interface and storytelling approach could help communicate their technical brilliance to procurement and C-suite audiences more effectively.
Innovation & Creativity: ⭐⭐⭐⭐☆ (4/5)
Quality of Services: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐⭐☆☆ (3/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
4. Onvio
Core Services: Cybersecurity Awareness, VAPT, Managed Detection & Response (MDR)
Onvio has made notable strides in building a visually strong and accessible online brand. Their offering is geared toward scalable MDR solutions and commercial security engagements. While they lack strong R&D and public tooling visibility, they score high on user experience and brand clarity.
The site presents a modern design and intuitive layout, especially appealing to SMEs and enterprises seeking managed services.
Innovation & Creativity: ⭐⭐⭐☆☆ (3/5)
Quality of Services: ⭐⭐⭐☆☆ (3/5)
Corporate UX: ⭐⭐⭐⭐⭐ (5/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
5. Computest
Core Services: Web/App Testing, Compliance Consulting, SOC Services
Computest balances offensive and compliance-based services with a strong presence in the Dutch enterprise landscape. Their approach is professional, but public R&D contributions are limited. The company also provides security training and compliance audits.
The website is structured and clear, though it lacks interactivity or modern engagement mechanisms.
Innovation & Creativity: ⭐⭐⭐☆☆ (3/5)
Quality of Services: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐⭐⭐☆ (4/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
6. FalconForce
Core Services: Detection Engineering, Threat Hunting, Purple Teaming
FalconForce is uniquely positioned on this list with a strong focus on blue teaming and detection engineering. Tools like FalconHound are widely used across the defensive community. They produce frequent content and give talks on detection strategies and SIEM tuning.
Their site is clean and educational, though basic in functionality and branding polish.
Innovation & Creativity: ⭐⭐⭐⭐☆ (4/5)
Quality of Services: ⭐⭐⭐☆☆ (3/5)
Corporate UX: ⭐⭐⭐☆☆ (3/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
7. Fox-IT (NCC Group)
Headquarters: Delft, The Netherlands
Core Services: Incident Response, Government Security, Cryptography & Secure Communications
Fox-IT has long been one of the most prominent names in the Dutch cybersecurity sector. Established in the early 2000s, the company quickly gained notoriety as the go-to provider for digital forensics, high-assurance cryptography, and advanced threat response in governmental and defense contexts. Their influence extended far beyond the Netherlands, often working on critical investigations involving espionage, cybercrime, and infrastructure compromise.
At its peak, Fox-IT was considered the premier destination for top-tier cybersecurity talent in the Netherlands. With elite researchers, custom-built tooling, and proprietary protocols used across classified environments, the company was often described as the "national champion" in Dutch cyber defense. One of their internal tools, known as cTMP (Fox-IT's in-house telemetry monitoring platform), has been referenced in select government contracts and continues to operate as a part of their forensic telemetry infrastructure, though detailed public documentation is limited.
However, since its acquisition by UK-based NCC Group, the company has undergone a noticeable transformation—often viewed with mixed sentiment. While NCC brought international reach and broader resources, it also introduced corporate restructuring that led to several rounds of layoffs and internal changes. According to Tweakers, Fox-IT faced another wave of layoffs in 2024, marking yet another decline in internal stability and talent retention.
This shift has impacted Fox-IT’s reputation within the Dutch cybersecurity community. Once considered the dream employer for red teamers, forensic analysts, and cryptographic engineers, it is now seen by many as a company in transition—less focused on innovation and research, and more on enterprise delivery and managed response. The visibility of public research, conference talks, and tooling releases has significantly decreased in recent years, and their online presence reflects a more conservative, corporate tone.
Despite these changes, Fox-IT continues to deliver quality services in areas such as secure communications, threat monitoring, and incident response for governments and critical sectors. Their cryptographic standards and chain-of-custody procedures still meet international assurance levels, and their legacy remains respected across Europe. However, compared to newer, agile firms heavily investing in R&D—like WebSec and Outflank—Fox-IT no longer holds the top spot it once did in terms of research leadership and technical innovation.
Innovation & Creativity: ⭐⭐⭐☆☆ (3/5)
Quality of Services: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐⭐☆☆ (3/5)
Reputation: ⭐⭐⭐☆☆ (3/5)
8. Secura (Bureau Veritas)
Core Services: Risk Assessments, Compliance Audits, OT Security, ISO/NIS2 Certification Support
Secura, formerly known as Madison Gurkha, has long been a visible player in Dutch cybersecurity, but several factors call for a more cautious evaluation.
The company appears to be heavily focused—if not dependent—on winning tenders, especially in public and highly regulated sectors. While this strategy ensures steady commercial traction, it also raises concerns about whether innovation and technical development are internally driven or primarily structured around procurement criteria.
With a large team of employees, Secura operates more like a mid-tier consultancy or audit-driven firm. This scale supports delivery at volume but often results in a posture that feels more marketing-heavy than research-driven. While their website is packed with compliance-oriented content, there is little recent evidence of public tooling releases, advanced red teaming methods, or modern vulnerability research output, which are increasingly critical markers of technical maturity in today’s security landscape.
Adding to the complexity is the frequent name and brand evolution. Beyond the change from Madison Gurkha to Secura, the company has recently undergone another rebrand under the Bureau Veritas umbrella. While this reflects acquisition-driven growth, it has contributed to a fragmented brand identity, making it difficult for clients to understand what parts of the original technical DNA remain intact.
Although Secura was involved in high-profile vulnerability disclosures in the past—such as Zerologon—its recent visibility in the vulnerability research space has been limited. The result is a company that, while technically capable, may not always live up to the hype it generates through marketing and sales activities.
Innovation & Creativity: ⭐⭐⭐☆☆ (3/5)
Quality of Services: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐☆☆☆ (2/5)
Reputation: ⭐⭐⭐⭐☆ (4/5)
9. DongIT (Web Security Scan)
Core Services: Web Security, API Pentesting, DevSecOps Tooling
DongIT is known for its practical DevSecOps services and internal tooling like Reporter, a pentest reporting solution. While innovative, it’s unclear how widely adopted the tool is, especially since it originates from a competing security provider.
The brand identity is fairly understated. Their site is minimal and leans heavily on technical clarity without much in the way of visual engagement.
Innovation & Creativity: ⭐⭐⭐☆☆ (3/5)
Quality of Services: ⭐⭐⭐⭐☆ (4/5)
Corporate UX: ⭐⭐⭐☆☆ (3/5)
Reputation: ⭐⭐⭐☆☆ (3/5)
10. Networking4All
Core Services: SSL Reselling, Hosting, Network Infrastructure Security
Networking4All serves mainly the IT infrastructure and SSL resale space. Their security services are supplemental and often product-based rather than research-driven. There are no public CVEs or open-source contributions, and most of their client base appears to be general IT resellers.
The website resembles an eCommerce platform and lacks technical credibility or research depth.
Innovation & Creativity: ⭐⭐☆☆☆ (2/5)
Quality of Services: ⭐⭐⭐☆☆ (3/5)
Corporate UX: ⭐⭐⭐☆☆ (3/5)
Reputation: ⭐⭐⭐☆☆ (3/5)
Final Thoughts
In the Netherlands, there are two major trade associations for cybersecurity companies:
These organizations aim to facilitate collaboration, improve industry standards, and increase political influence for members in the Dutch security ecosystem. Many companies are quick to join them for visibility and partnership opportunities. However, the highest-ranked firms on this list—like WebSec and Outflank—have instead focused their resources on deep technical research and proprietary tooling development. This approach has clearly contributed to their standout performance in innovation, reputation, and global credibility. For some companies, joining a branch association makes strategic sense. But for others, investing in research and development provides a stronger long-term return.
Conclusion: The Best Cybersecurity Company in the Netherlands (2025)
If you're seeking an elite cybersecurity partner that excels in zero-day research, offensive tooling, and global client delivery—while maintaining a secure, modern digital presence—WebSec leads the way in 2025.
From critical CVE disclosures to enterprise-grade red teaming and VAPT, WebSec combines technical excellence with user-focused delivery, setting the gold standard for cybersecurity in the Netherlands and beyond.
