Hear from our customers
"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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“The sector and the partners we work with maintain increasingly high security standards for IoT-products and services. 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.”
Benjamin van der Hilst Co-Founder & CEO
“New requirements from NIS2 for OT systems are increasing the focus on security. With Defion, we know we have the right expertise in-house to keep our systems secure. The collaboration was easy and pleasant; the specialists truly sat next to us rather than across from us. Thanks to their openness and expertise, we are working together toward the same goal: optimal security. This gives us the confidence to face the future.”
Alexander OdijkTeam Manager
“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.”
Gerco VermeerDevelopment Manager
How we help
Turning Cyber Risk into Executive Clarity
C-level leaders need visibility, not noise. DEFION translates complex threat landscapes into clear business language — defining what matters most, quantifying exposure, and helping boards make confident, risk-based decisions. Our Executive Advisory bridges strategy and operations, ensuring cybersecurity supports your overall business objectives.
Building Resilience Across IT, OT, and IoT
Your digital and operational systems are deeply connected — and attackers know it. DEFION secures the entire ecosystem, from corporate networks to industrial controllers and connected devices. Through Active Defense, continuous monitoring, and tailored response plans, we keep operations safe, compliant, and uninterrupted.
Ensuring Compliance Becomes Competitive Advantage
Regulations like NIS2, IEC 62443, and the Cyber Resilience Act demand measurable control. DEFION helps you turn compliance into confidence — aligning governance, policy, and technical implementation so you can demonstrate resilience to regulators, partners, and customers alike.
Accelerating Security Maturity with Measurable Impact
Security isn’t static — it evolves with your business. DEFION supports that evolution through targeted assessments, threat-informed testing, and managed detection services. We help executives see progress in tangible metrics: reduced risk exposure, faster response, and a stronger security culture across the organisation.
Why work with us?
You want security decisions backed by executive insight
Cybersecurity is now a business risk, not just a technical one.
DEFION’s Executive Advisory services connect security and strategy — guiding leaders with clear visibility, prioritization, and crisis preparedness when decisions matter most.
Your operations can’t afford downtime or disruption
Whether in manufacturing, energy, or critical infrastructure, uptime and safety are non-negotiable.
DEFION helps you build defenses that respect availability while enhancing resilience — ensuring secure, continuous operations across IT, OT, and IoT environments.
You want attackers to be detected — and stopped — before they reach you
Modern threats move fast, often across IT, OT, and IoT networks.
DEFION’s Active Defense combines real-time detection, threat hunting, and adversary emulation to expose and neutralize attacks before they disrupt operations.
You value assessments that drive real decisions — not just reports
DEFION uses assessments as a catalyst for change, not a checkbox.
Our risk assessments, red teaming, and technical evaluations uncover where exposure meets business impact — helping executives prioritise and act.
Combined with threat intelligence, managed detection, and incident response retainers, these insights turn awareness into measurable resilience.
You’re navigating complex new regulations and standards
Compliance pressure is increasing through NIS2, IEC 62443, and the EU Cyber Resilience Act.
DEFION translates those frameworks into practical, measurable actions that ensure compliance, strengthen governance, and demonstrate control to regulators and boards.
In need of unified protection across IT, OT, and IoT?
Today’s infrastructures are hyperconnected — from cloud to factory floor to embedded IoT sensors.
DEFION helps you design one security architecture that covers all layers, preventing attackers from exploiting the weak links between digital, operational, and connected devices.
You expect transparency, independence, and technical excellence
No vendor lock-ins. No hidden agendas.
DEFION operates independently, providing objective advice and proven engineering expertise to help you make decisions that genuinely reduce risk.
