# Top 50 cybersecurity companies in the Netherlands

Tamtam tracks 55 cybersecurity companies headquartered in the Netherlands. This list ranks the 50 largest by number of employees on LinkedIn, led by Getronics, KPMG Nederland and Centric. Their median headcount is 272. Half of them were founded in 2002 or later. The most common headquarters are Amsterdam (10), Delft (4) and Utrecht (4).

The cybersecurity companies in the Netherlands on this list are predominantly large IT services and consulting firms. Many provide comprehensive digital solutions, cloud services, and infrastructure management. Key players include Getronics, a global technology solutions provider, and Irdeto, a leader in digital platform cybersecurity.

A notable pattern among these companies is their geographical spread across various Dutch cities, rather than a single cluster. While Amsterdam and Hoofddorp feature prominently, other significant headquarters are in Amstelveen, Gouda, Arnhem, Utrecht, and Delft, indicating a decentralized distribution of these larger IT and cybersecurity entities.

🇳🇱 Netherlands · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Getronics](https://www.tamtam.ai/c/getronics-amsterdam-duivendrecht) (getronics.com)<br>Global technology solutions provider empowering businesses with tailored, secure, and sustainable IT services to drive growth, efficiency, and reduce environmental impact | IT Services and IT Consulting | 🇳🇱 Amsterdam-Duivendrecht | 4,147 | 1887 |
| 2 | [KPMG Nederland](https://www.tamtam.ai/c/kpmg-nederland) (kpmg.com)<br>This company provides high-quality audit, tax, and advisory services to a wide range of clients, helping them navigate complex challenges and excel | Financial Services | 🇳🇱 Amstelveen | 4,008 |  |
| 3 | [Centric](https://www.tamtam.ai/c/centric) (centric.eu)<br>A leading partner in digital transformation, providing software solutions, IT assessments, cloud services, staffing, and business process outsourcing to a diverse range of clients | IT Services and IT Consulting | 🇳🇱 Gouda | 2,900 | 1992 |
| 4 | [DEKRA Nederland](https://www.tamtam.ai/c/dekra-nederland) (dekra.nl)<br>DEKRA ensures safety and sustainability through testing, inspecting, and certifying products, processes, and environments to promote trust and reliability | Public Safety | 🇳🇱 Arnhem | 1,307 |  |
| 5 | [Irdeto](https://www.tamtam.ai/c/irdeto) (irdeto.com)<br>A global leader in digital platform cybersecurity, protecting revenue, enabling growth, and fighting cybercrime in video entertainment, gaming, and connected industries | IT Services and IT Consulting | 🇳🇱 Hoofddorp | 1,136 | 1969 |
| 6 | [Accenture the Netherlands](https://www.tamtam.ai/c/accenture-the-netherlands) (accenture.com)<br>Global professional services company specializing in digital, cloud, and security solutions for clients in 40+ industries worldwide, powered by Advanced Technology and Intelligent Operations | Business Consulting and Services | 🇳🇱 Amsterdam | 1,078 | 2001 |
| 7 | [SURF](https://www.tamtam.ai/c/surf-utrecht) (surf.nl)<br>Cooperative association of Dutch educational and research institutions working together to acquire digital services, encourage knowledge sharing, and innovate continuously | IT Services and IT Consulting | 🇳🇱 Utrecht | 994 | 1987 |
| 8 | [OGD ict-diensten](https://www.tamtam.ai/c/ogd-ict-diensten) (ogd.nl)<br>Offering simplified IT solutions, OGD provides advice, projects, software development, infrastructure management, end-user support, and IT staffing services across various sectors | IT Services and IT Consulting | 🇳🇱 Delft | 949 | 1988 |
| 9 | [SLTN](https://www.tamtam.ai/c/sltn) (sltn.nl)<br>A leading ICT company in the Netherlands with a focus on data centers, Cloud, infrastructure, application services, and consultancy, serving over 1,400 clients | IT Services and IT Consulting | 🇳🇱 Hilversum | 835 | 1980 |
| 10 | [Hallo](https://www.tamtam.ai/c/hallo) (hallo.eu)<br>Hallo focuses on providing solutions for effective communication and collaboration with clients, partners, suppliers, and employees through online workspaces Personalized advice and reliable services | IT Services and IT Consulting | 🇳🇱 Alkmaar | 835 | 2006 |
| 11 | [Esprit ICT](https://www.tamtam.ai/c/esprit-ict) (esprit-ict.nl)<br>Detron is an independent IT & Telecom partner focusing on workplace solutions, infrastructure, connectivity, and security, offering advice, integration, and management services to organizations | IT Services and IT Consulting | 🇳🇱 Veenendaal | 622 | 2003 |
| 12 | [Yielder](https://www.tamtam.ai/c/yielder) (yielder.com)<br>Managed solutions provider helping businesses in the Netherlands maximize telecom & IT potential with quality, proven solutions, and an entrepreneurial spirit Creating opportunities for clients | IT Services and IT Consulting | 🇳🇱 Hoofddorp | 564 |  |
| 13 | [Valid](https://www.tamtam.ai/c/valid) (valid.nl)<br>A company offering IT consulting, managed services, and digital business solutions to help mid-size organizations optimize and innovate their businesses | IT Services and IT Consulting | 🇳🇱 Eindhoven | 475 | 1999 |
| 14 | [RH Marine](https://www.tamtam.ai/c/rh-marine) (rhmarine.com)<br>RH Marine is a leading system integrator providing tailored electrical and automation solutions for Defence, Safety & Security ships and Yachts since 1860 | Shipbuilding | 🇳🇱 Schiedam | 457 | 1860 |
| 15 | [Wortell](https://www.tamtam.ai/c/wortell) (wortell.nl)<br>Empowering people with technology since 1997 Specializing in modern outsourcing for work, cloud, security, smart solutions, and meeting environments Partnered with Microsoft | IT Services and IT Consulting | 🇳🇱 Lijnden | 408 | 1997 |
| 16 | [SARA](https://www.tamtam.ai/c/sara) (surf.nl)<br>A tech company based in Amsterdam (formerly known as SARA) providing research computing and data services, with updates on LinkedIn | IT Services and IT Consulting | 🇳🇱 Amsterdam | 406 | 1971 |
| 17 | [dhs](https://www.tamtam.ai/c/dhs) (dhs.nl)<br>ICT company providing customized solutions for organizations, focusing on user needs and creating maximum value Bold, creative, and innovative approach to technology | IT Services and IT Consulting | 🇳🇱 Oss | 393 | 1984 |
| 18 | [Avit](https://www.tamtam.ai/c/avit) (avitgroup.com)<br>A quality network integrator and managed service provider specializing in networking, cybersecurity, and hybrid cloud solutions to optimize IT infrastructure for businesses | IT Services and IT Consulting | 🇳🇱 Vianen | 355 | 2002 |
| 19 | [Intwo](https://www.tamtam.ai/c/intwo) (intwo.cloud)<br>Specializing in cloud technology, Intwo offers IT solutions tailored to industries using Microsoft technologies for business growth and digital execution | IT Services and IT Consulting | 🇳🇱 Hoofddorp | 350 | 1998 |
| 20 | [Kader Group](https://www.tamtam.ai/c/kader-group) (kader.nl)<br>Kader Group improves quality, safety, and sustainability through consultancy, digital solutions, and training in areas such as quality, safety, cyber security, and environment | Business Consulting and Services | 🇳🇱 Zeist | 330 | 1994 |
| 21 | [Batenburg Industrial Automation](https://www.tamtam.ai/c/batenburg-industrial-automation) (batenburg-industrialautomation.nl)<br>The company specializes in industrial automation, providing customized solutions for digital security, data intelligence, robotics, and process automation across various industries | Automation Machinery Manufacturing | 🇳🇱 Nederland | 316 |  |
| 22 | [Open Line](https://www.tamtam.ai/c/open-line) (openline.nl)<br>Providing trusted cloud solutions for sensitive industries, ensuring data security and compliance with certifications like ISO 27001 and GDPR Mixing public and private cloud seamlessly | IT Services and IT Consulting | 🇳🇱 Maastricht Airport | 314 | 2002 |
| 23 | [Fox-IT](https://www.tamtam.ai/c/fox-it) (fox-it.com)<br>This company prevents, solves, and mitigates the most serious cyber threats with innovative solutions, combining human intelligence and technology for a more secure society. | Computer and Network Security | 🇳🇱 Rijswijk | 289 | 1999 |
| 24 | [Onited](https://www.tamtam.ai/c/onited) (onited.com)<br>Providing technology solutions combining technical expertise and human understanding to help organizations control processes, digitize services, and manage IT effectively. | IT Services and IT Consulting | 🇳🇱 Amersfoort | 288 | 2016 |
| 25 | [Eye Security](https://www.tamtam.ai/c/eye-security) (eye.security)<br>Protects small, medium-sized European enterprises from cyber threats. Affordable all-in-one service including endpoint monitoring, awareness, 24/7 incident response, and cyber insurance. | Computer and Network Security | 🇳🇱 The Hague | 272 | 2020 |
| 26 | [NMi Group](https://www.tamtam.ai/c/nmi-group) (nmigroup.com)<br>An independent specialist in metrology testing, inspection, and certification, ensuring measuring instruments meet statutory requirements for global market access | Public Safety | 🇳🇱 Delft | 272 | 1873 |
| 27 | [Solvinity](https://www.tamtam.ai/c/solvinity) (solvinity.com)<br>A provider of secure managed cloud services, offering innovative solutions for digital transformation, cybersecurity, and software development to government, financial, and business organizations | IT Services and IT Consulting | 🇳🇱 Amsterdam | 261 | 2015 |
| 28 | [Nomios Netherlands](https://www.tamtam.ai/c/nomios-netherlands) (nomios.nl)<br>Designs, secures, and manages digital infrastructures, offering cybersecurity and networking solutions. Combines technology with consulting and managed services for strategic customer value. | Computer and Network Security | 🇳🇱 Zoeterwoude | 258 | 2004 |
| 29 | [Northwave Cyber Security](https://www.tamtam.ai/c/northwave-cyber-security) (northwave-cybersecurity.com)<br>Offers intelligent combination cyber security services protecting information. Integrates people, processes, technology for smart security operations. Combines information security, privacy, business continuity management with cyber intelligence and security technology. | Computer and Network Security | 🇳🇱 Utrecht | 241 | 2006 |
| 30 | [Fourthline](https://www.tamtam.ai/c/fourthline) (fourthline.com)<br>Provides modular AI-powered KYC and AML solutions ensuring regulatory compliance, fraud protection, and seamless customer onboarding for businesses. | Financial Services | 🇳🇱 Amsterdam | 213 | 2017 |
| 31 | [Cloudwise](https://www.tamtam.ai/c/cloudwise) (cloudwise.nl)<br>The company provides ICT solutions for education, offering support, hardware, an online learning platform, and training to simplify digital teaching | IT Services and IT Consulting | 🇳🇱 Hengelo | 211 | 2010 |
| 32 | [AU10TIX](https://www.tamtam.ai/c/au10tix) (au10tix.com)<br>An identity intelligence company offering fast, reliable solutions for customer onboarding, verification, fraud prevention, compliance, and trust-building through cutting-edge technology | Technology, Information and Internet | 🇳🇱 Amsterdam | 206 |  |
| 33 | [Proximus NXT Nederland](https://www.tamtam.ai/c/proximus-nxt-nederland) (proximusnxt.nl)<br>Telindus is an IT partner specializing in building resilient IT infrastructures through networking, cloud, cybersecurity, and data & AI solutions for future-ready organizations | IT Services and IT Consulting | 🇳🇱 Utrecht | 203 | 1985 |
| 34 | [InSpark \| Innovate to Accelerate](https://www.tamtam.ai/c/inspark-innovate-to-accelerate) (inspark.nl)<br>Innovates and transforms organizations using Microsoft Cloud Technology, focusing on security, cloud management, and AI innovation, driving impact with expert consultants and award-winning expertise. | IT Services and IT Consulting | 🇳🇱 Amstelveen | 195 | 2017 |
| 35 | [TCPM](https://www.tamtam.ai/c/tcpm) (tcpm.nl)<br>Independent engineering and advisory firm with over 25 years of experience, offering expertise in engineering, industrial safety, and project management across various industries | Industrial Machinery Manufacturing | 🇳🇱 Apeldoorn | 191 | 1990 |
| 36 | [Nsecure](https://www.tamtam.ai/c/nsecure) (nsecure.nl)<br>Nsecure provides innovative security solutions for various industries, combining technology, ICT, and human oversight to create a secure environment for organizations and individuals | Security and Investigations | 🇳🇱 Barendrecht | 184 | 1995 |
| 37 | [Brightsight](https://www.tamtam.ai/c/brightsight) (brightsight.com)<br>A leading independent security evaluation lab, now part of SGS, offering specialized solutions and services to support industries worldwide | IT System Testing and Evaluation | 🇳🇱 Delft | 182 |  |
| 38 | [Eshgro \| Cloud Services ☁](https://www.tamtam.ai/c/eshgro-cloud-services) (eshgro.nl)<br>Innovative IT company helping businesses use cloud services easily, securely, and affordably, focusing on functionality over technical details for growth | IT Services and IT Consulting | 🇳🇱 Druten | 108 | 1992 |
| 39 | [Hadrian](https://www.tamtam.ai/c/hadrian-amsterdam) (hadrian.io)<br>Hadrian offers automated event-based scanning to map vulnerabilities and provide critical insights for continuous security validation in digital infrastructures | Computer and Network Security | 🇳🇱 Amsterdam | 106 | 2021 |
| 40 | [Securance](https://www.tamtam.ai/c/securance) (securance.com)<br>Simplifies risk management and cybersecurity. Provides advisory, assurance, cybersecurity, audit reports, penetration testing, SaaS platform, and vulnerability scans for security and compliance. | Computer and Network Security | 🇳🇱 Utrecht | 83 | 2004 |
| 41 | [EclecticIQ](https://www.tamtam.ai/c/eclecticiq) (eclecticiq.com)<br>Provides threat intelligence technology and services; empowers customers neutralize critical cyber threats; offers dynamic solutions for smarter, faster security decisions. | Computer and Network Security | 🇳🇱 Amsterdam | 69 | 2014 |
| 42 | [ThreatFabric](https://www.tamtam.ai/c/threatfabric) (threatfabric.com)<br>Fuses threat research, fraud experience, and next-gen technology to detect latest fraud threats and ensure channel fraud prevention globally. Customers earn trust. | Computer and Network Security | 🇳🇱 Amsterdam | 61 | 2015 |
| 43 | [Keesing Technologies](https://www.tamtam.ai/c/keesing-technologies) (keesingtechnologies.com)<br>Experts in identity verification since 1911, providing cutting-edge solutions for businesses worldwide to prevent fraud and verify identities with accuracy and security | Software Development | 🇳🇱 Amsterdam | 45 | 1911 |
| 44 | [Scalair](https://www.tamtam.ai/c/scalair) (scalair.fr)<br>Scalair offers Cloud and network solutions to help companies design their environments, from hosting to creating agile and scalable architectures | IT Services and IT Consulting | 🇳🇱 Hem | 39 |  |
| 45 | [Navaio IT Security](https://www.tamtam.ai/c/navaio-it-security) (navaio.com)<br>Innovative IT company specializing in Identity and Access Management, Data Governance, Security Awareness, and Cyber Resilience services to decrease risk and enhance organizational performance | IT Services and IT Consulting | 🇳🇱 Haarlem | 36 | 2017 |
| 46 | [OneWelcome, a Thales company](https://www.tamtam.ai/c/onewelcome-a-thales-company) (cpl.thalesgroup.com)<br>It is now closed and advises following ThalesCloudSecurity for all updates related to their services and information. | Software Development | 🇳🇱 Amersfoort | 32 |  |
| 47 | [Q*Bird](https://www.tamtam.ai/c/q-bird) (q-bird.com)<br>A European company specializing in quantum secure networking, offering multipoint connectivity, cost-effective scaling, improved security, and upgradable technology for future quantum networks | Technology, Information and Internet | 🇳🇱 Delft | 31 | 2022 |
| 48 | [Aumatics](https://www.tamtam.ai/c/aumatics) (aumatics.nl)<br>Aumatics provides cloud services, managed IT services, and ICT projects for small and medium enterprises, offering online workstations, server hosting, and professional IT services | IT Services and IT Consulting | 🇳🇱 Zoetermeer | 29 | 2010 |
| 49 | [Sensity AI](https://www.tamtam.ai/c/sensity-ai) (sensity.ai)<br>Specializing in detecting and preventing deepfake content along the entire process from creation to dissemination | Software Development | 🇳🇱 Amsterdam | 26 | 2018 |
| 50 | [Cloud Life \| Microsoft Cybersecurity](https://www.tamtam.ai/c/cloud-life-microsoft-cybersecurity) (cloudlife.nl)<br>A top Microsoft Partner specializing in secure and modern cloud solutions for efficient and risk-free workplace transformation | IT Services and IT Consulting | 🇳🇱 Halfweg | 17 | 2017 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in the Netherlands

- [The largest companies in the Netherlands](https://www.tamtam.ai/l/largest-companies-netherlands) (12,236)
- [Multinational companies in the Netherlands](https://www.tamtam.ai/l/multinational-companies-netherlands) (2,510)
- [Retail chains in the Netherlands](https://www.tamtam.ai/l/retail-chains-netherlands) (1,138)
- [Transportation, Logistics, Supply Chain and Storage companies in the Netherlands](https://www.tamtam.ai/l/transportation-logistics-supply-chain-and-storage-companies-netherlands) (825)
- [Logistics companies in the Netherlands](https://www.tamtam.ai/l/logistics-companies-netherlands) (791)
- [Manufacturers in the Netherlands](https://www.tamtam.ai/l/manufacturers-netherlands) (770)
- [Critical infrastructure operators in the Netherlands](https://www.tamtam.ai/l/critical-infrastructure-operators-netherlands) (765)
- [SaaS companies in the Netherlands](https://www.tamtam.ai/l/saas-companies-netherlands) (758)
- [Software Development companies in the Netherlands](https://www.tamtam.ai/l/software-development-companies-netherlands) (748)
- [Professional services firms in the Netherlands](https://www.tamtam.ai/l/professional-services-firms-netherlands) (739)
- [Companies with in-house R&D in the Netherlands](https://www.tamtam.ai/l/r-and-d-companies-netherlands) (738)
- [IT Services and IT Consulting companies in the Netherlands](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-netherlands) (690)
- [Financial services firms in the Netherlands](https://www.tamtam.ai/l/financial-services-firms-netherlands) (688)
- [Healthcare providers in the Netherlands](https://www.tamtam.ai/l/healthcare-providers-netherlands) (675)
- [Hospitals and Health Care companies in the Netherlands](https://www.tamtam.ai/l/hospitals-and-health-care-companies-netherlands) (620)
- [Family-owned companies in the Netherlands](https://www.tamtam.ai/l/family-owned-companies-netherlands) (617)
- [IT services companies in the Netherlands](https://www.tamtam.ai/l/it-services-companies-netherlands) (585)
- [Financial Services companies in the Netherlands](https://www.tamtam.ai/l/financial-services-companies-netherlands) (572)
- [Consulting firms in the Netherlands](https://www.tamtam.ai/l/consulting-firms-netherlands) (568)
- [Hotel and hospitality groups in the Netherlands](https://www.tamtam.ai/l/hospitality-groups-netherlands) (514)
- [Truck Transportation companies in the Netherlands](https://www.tamtam.ai/l/truck-transportation-companies-netherlands) (514)
- [Hardware manufacturers in the Netherlands](https://www.tamtam.ai/l/hardware-companies-netherlands) (447)
- [Distributors and wholesalers in the Netherlands](https://www.tamtam.ai/l/distributors-and-wholesalers-netherlands) (427)
- [Companies with a mobile app in the Netherlands](https://www.tamtam.ai/l/companies-with-mobile-app-netherlands) (411)

## The same list elsewhere

- [Cybersecurity companies in the world](https://www.tamtam.ai/l/cybersecurity-companies-in-the-world) (3,776)
- [Cybersecurity companies in Europe](https://www.tamtam.ai/l/cybersecurity-companies-in-europe) (2,197)

---

Source: https://www.tamtam.ai/l/cybersecurity-companies-netherlands