DEFION Security Netherlands is an independent, full-service cybersecurity specialist with offices in the Netherlands and Spain and a team of 100+ experts. From our Active Defense approach, we help our clients: • Reduce cyber risk exposure • Comply with complex cybersecurity regulations, like NIS2, DORA and CRA • Strengthen overall resilience and business continuity We connect prevention, detection, and response into one integrated security strategy – delivering not just technical expertise, but strategic advisory at the executive level. Our guidance enables leadership to align cybersecurity with business priorities and make informed investment decisions. Through DEFION Research Labs, we: • Discover new vulnerabilities • Dissect emerging threats • Collaborate with public partners and positively impact society This unique blend of frontline expertise and applied research ensures our clients are protected today and prepared for tomorrow. Learn more at defion.security
| Website | https://defion.security |
| Employees | 94 (38 on RocketReach) |
| Founded | 1997 |
| Industry | Computer and Network Security |
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DEFION Security Questions
Hartger Ruijs is the CEO of DEFION Security.
38 people are employed at DEFION Security.
Top DEFION Security Employees
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Hartger Ruijs
Chief Executive Officer at DEFION Security
Amsterdam, NH, NL13 -
Thijs Havenaar
Chief Financial Officer at DEFION Security
The Hague, ZH, NL23 -
Dennis Msc.
Chief Technology Officer EU at DEFION Security
Amsterdam, NH, NL21 -
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33
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Rene Ouwehand
Team lead governance at DEFION Security
Katwijk aan Zee, ZH, NL2 -
Kuno Molkenboer
Sales en Partner Manager at DEFION Security
The Hague, ZH, NL11 -
Dave Smits
Business Unit Director SOC at DEFION Security
Amsterdam, NH, NL -
Bart Otten
Senior Software Developer at DEFION Security
Bleskensgraaf, ZH, NL2 -
Antonio J.
Cybersecurity Analyst at DEFION Security
Estepona, AL, ES
