Defending your future.
Starting today.
DEFION is an independent cybersecurity firm protecting organisations across Europe. We cover the full spectrum: from strategic advisory and penetration testing to 24/7 threat detection and hands-on incident response.
Independent. Expert-driven. Vendor-neutral.
DEFION was founded on a simple principle: organisations deserve cybersecurity advice that puts their interests first. No product vendor behind us, no commissions, no conflicts of interest. Just expert knowledge, deployed where it matters most.
Over 20 years, we have built one of Europe's strongest security teams. 100+ certified experts cover every discipline: from red teaming and OT security to threat intelligence and digital forensics. No generalist consultants, only specialists with deep field experience.
Our approach is called Active Defense. We do not wait for alerts. We hunt threats, continuously validate your security controls and build the resilience to respond swiftly when an incident occurs. Prevention, detection and response as a continuous process.
Independent
No vendor affiliations. Our recommendations are based on what is best for your organisation, not on what a vendor wants to sell.
Full spectrum
From board-level advisory to technical execution and 24/7 monitoring. One partner, complete coverage.
IT + OT + IoT
Security across your entire attack surface: traditional IT, operational technology and connected devices in a unified approach.
Expert-driven
Every engagement is carried out by certified specialists with deep field experience. No juniors on senior tasks.
Two decades of expertise, united.
Built from two strong organisations with decades of track record in security testing, digital forensics and incident response.
Two pioneering startups
Computest founded in Zoetermeer (security testing) and Incide Digital Data in Barcelona (digital forensics).
Incident response
Incide expands into incident response, becoming one of Spain's leading DFIR firms.
Pine Digital Security
Computest acquires Pine Digital Security (founded 1997), combining two decades of pentest expertise.
Offensive security
Incide strengthens its offering with offensive security services: red teaming and advanced pentesting.
European force combined
Computest Security and Incide join forces. Europe's first full-spectrum security provider is born.
DEFION Security
One name, one mission. DEFION Security emerges as a powerful European cybersecurity player.
Two pioneering startups
Computest founded in Zoetermeer (security testing) and Incide Digital Data in Barcelona (digital forensics).
Incident response
Incide expands into incident response, becoming one of Spain's leading DFIR firms.
Pine Digital Security
Computest acquires Pine Digital Security (founded 1997), combining two decades of pentest expertise.
Offensive security
Incide strengthens its offering with offensive security services: red teaming and advanced pentesting.
European force combined
Computest Security and Incide join forces. Europe's first full-spectrum security provider is born.
DEFION Security
One name, one mission. DEFION Security emerges as a powerful European cybersecurity player.
Active Defense: prevention, detection and response as a continuous process.
Most security providers focus on a single area: only pentests, only monitoring, or only advisory. At DEFION, all these disciplines are connected. We call it Active Defense: a continuous cycle of prevention, detection and response. Across IT, OT and IoT simultaneously.
Independent
No vendor interests. Your security comes first, not the margin of a product vendor.
Expert-driven
Only specialists with proven field experience. No generalist consultants running through a checklist.
Full spectrum
From boardroom advisory to 24/7 SOC monitoring and hands-on incident response. Everything under one roof.
Measurable impact
Demonstrable contribution to your resilience. Concrete results, not just reports.
Trusted partner
A permanent part of your team. Long-term relationships where we grow alongside your organisation.
Offices in the Netherlands and Spain.
Ready to strengthen your security posture?
Speak with one of our experts about your security situation. No obligations, no sales pitch.