Cyber security as a business accelerator

We integrate cybersecurity into the core of your business, turning it into a growth engine.

Trusted by industry leaders worldwide

ZYNAPATTACKIQMicrosoftCrowdStrike
ZYNAPATTACKIQMicrosoftCrowdStrike

Security services to elevate your business growth

We provide end-to-end protection for your digital assets, ensuring continuity, compliance, and resilience against evolving threats. Trusted by leadership teams across industries, DEFION enables you to defend revenue, reputation, and shareholder confidence in an increasingly hostile cyber landscape.

Security Advisory Services

Strategic Resilience

Security Advisory Services

Transform security compliance into a competitive advantage, accelerate decision-making, and reduce operational risk. Ensure your business grows seamlessly by efficiently securing every new technology, platform, or market before scaling.

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Digital Forensics & Incident Response Services

Cyber Crisis Management

Digital Forensics & Incident Response Services

DEFION’s Digital Forensics & Incident Response (DFIR) services give leadership confidence before, during, and after a cyber incident. We help organizations prepare with tailored response planning, validate readiness through exercises, and provide immediate expertise when crises unfold. From containing active threats to conducting forensic investigations and preserving evidence, DEFION delivers clear, executive-level insights that guide decision-making, reduce disruption, and accelerate recovery—ensuring resilience, compliance, and trust at the highest level.

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Business Continuity Services

Business Continuity & Recovery

Business Continuity Services

DEFION’s Business Continuity Services ensure your organization remains resilient in the face of cyber incidents, disruptions, and regulatory demands. By combining risk assessments, continuity planning, and executive advisory, we help leadership safeguard critical operations, protect reputation, and maintain compliance—turning resilience into a strategic advantage.

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Pentesting Services

Attack Readiness

Pentesting Services

With DEFION’s Penetration Testing, organizations gain executive-level assurance of how well their defenses hold up against real-world threats. By systematically probing networks, applications, and infrastructure, DEFION identifies vulnerabilities before adversaries exploit them—delivering clear, prioritized insights that help leadership strengthen resilience, reduce business risk, and demonstrate readiness. As part of Attack Readiness, penetration testing ensures security posture is not assumed but proven.

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Managed Detection & Response Services

Adaptive Threat Detection

Managed Detection & Response Services

DEFION’s Managed Detection & Response (MDR) delivers 24/7 vigilance, powered by actionable threat intelligence and our Active Defense approach. By combining continuous monitoring, expert analysis, and rapid response, MDR gives leadership confidence that threats are detected, understood, and contained—ensuring business continuity, reputation, and resilience are safeguarded around the clock.

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The backbone of your digital resilience.

DEFION unites board-level strategy with hands-on technical expertise. From advisory and risk assessment to 24/7 monitoring, red teaming, and incident response, we cover the entire cybersecurity spectrum. Executives gain clarity and assurance, while technical teams benefit from actionable insights and direct collaboration.

The backbone of your digital resilience.
Since 1997
28 years of field experience
90+
Security experts
1000+
Clients supported
100.000+
End points monitored 24/7

Sectors

  • Financial Services: Protect trust. Reduce risk. Stay compliant.

    Financial Services: Protect trust. Reduce risk. Stay compliant.

    Financial institutions are prime targets for cybercrime. Banks, insurers, asset managers, and fintechs must safeguard sensitive data, keep services available, and meet stringent regulations. DEFION delivers sector-specific cybersecurity that strengthens resilience end-to-end—from prevention and detection to response and recovery.

  • Manufacturing & Industry: Keeping production running, safely and securely.

    Manufacturing & Industry: Keeping production running, safely and securely.

    Manufacturers and industrial operators rely on time-critical processes and flawless delivery. A single cyber incident can halt production lines, disrupt supply chains, and cause financial and reputational losses. DEFION provides cybersecurity services tailored to industrial environments, combining IT and OT expertise to secure operations without interrupting productivity.

  • Research & Education: Protecting people, knowledge and innovation.

    Research & Education: Protecting people, knowledge and innovation.

    Educational institutions and research facilities are prime targets for cyberattacks. Universities, schools, and academic hospitals face ransomware, espionage, and data theft campaigns that jeopardize learning, research breakthroughs, and patient care. DEFION specializes in protecting this sector with advanced detection and response services (MDR/SOC-SIEM) and threat intelligence, ensuring security without hindering academic freedom or innovation.

  • Government: Upholding trust in public institutions.

    Government: Upholding trust in public institutions.

    Governments at all levels—central, regional, and local—hold sensitive citizen data and deliver essential public services. Cyberattacks targeting public administrations, justice systems, emergency response, or citizen portals undermine public trust and disrupt social stability. DEFION provides specialized cybersecurity services for government entities, ensuring resilience, regulatory compliance, and operational continuity.

  • Retail & E-commerce: Secure shopping, secures trust.

    Retail & E-commerce: Secure shopping, secures trust.

    Retailers and e-commerce platforms operate in fast-moving, margin-driven markets where downtime, fraud, or data breaches can immediately impact revenue and reputation. DEFION provides cybersecurity services designed to keep online and in-store operations secure, resilient, and trusted—so you can focus on growth.

  • Technology & SaaS: Secure innovation at scale.

    Technology & SaaS: Secure innovation at scale.

    Technology providers, SaaS platforms, and MSPs deliver the digital backbone of today’s economy. From fintech to cloud services, their solutions must be fast, available, and secure—without compromise. DEFION strengthens trust in tech companies by embedding cybersecurity into every layer: securing supply chains, demonstrating compliance, and enabling secure growth.

  • Critical Infrastructures: Protect what society depends on.

    Critical Infrastructures: Protect what society depends on.

    Energy, water, transport, healthcare, telecom, and digital infrastructure are the backbone of modern life. Disruption in these systems can have cascading effects across economies and communities. DEFION provides advanced cybersecurity tailored to operators of essential services, ensuring continuity, resilience, and compliance with sector regulations such as NIS2.

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Are you NIS2 compliant?

DEFION: guiding you to compliance with cybersecurity laws and regulations.

Check Your NIS2 Readiness

Customer stories

AFAS actively defended by DEFION
"Thanks to DEFION, we benefit from up-to-date knowledge about contemporary security threats and means to avert risks. We have peace of mind knowing we are fully supported 24/7 by their team.”
Jeroen van Stokkum
Manager ICT
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AFAS actively defended by DEFION
Avy partners with DEFION to safeguard sensitive drone data
“The sector and the partners we work with maintain high security standards. Protecting the privacy of individuals in the images and the sensitivity of the information the drones collect, such as on objects in critical infrastructure, requires our security to be airtight. With Defion, we are working with a professional partner who can support us at the right level. The collaboration also fits perfectly within our strategy to deliver reliable and secure drone technology to European customers.”
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Dutch State Lottery protected against cybercrime by DEFION
“The specialists at Defion are an extension of our own team and ensure that we always remain alert to threats. It is great to have an independent party with extensive experience and expertise that takes a critical look and proactively provides advice. For us, this is a valuable aspect of the collaboration that allows us to stay one step ahead of cybercriminals.”
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FuturumShop boosts cyber resilience with DEFION as full-service security partner
“If you look at where we were ten years ago, we’ve made enormous progress. The sense of control is greater. With Security Assurance and MDR we have set up processes and control mechanisms that allow us to limit the impact of a potential attack. The collaboration also serves as a constant reminder to maintain focus on security and set the right priorities in that area. It keeps us alert and sharp. Moreover, Defion’s specialists are highly technical and passionate about their field. That clearly shows in their services.”
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Let’s turn 24/7 monitoring into true response capability

Talk to our team and see how rapid, expert-led response changes your security equation.

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