DEFION Security Employee Directory

Q: What is DEFION Security known for?

DEFION Security was founded in 1997. DEFION Security operates in the Computer and Network Security industry.

Q: How many employees does DEFION Security have currently?

DEFION Security has approximately 85 employees.

Computer and Network SecurityNetherlands51-200 Employees

DEFION Security 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

Find DEFION Security employees' phone numbers or email addresses

DEFION Security Global Highlights

Europe
63

Netherlands
56
Spain
4
Belgium
2
Austria
1

Asia
1

Israel
1

DEFION Security's Leadership

H. R.
Chief Executive Officer
Mobile Phone
Email
T. H.
Cfo Defion Security
Mobile Phone
Email
T. P.
Chief Client Officer Benelux
Mobile Phone
Email
R. T.
Head Of Governance & Advisory
Mobile Phone
Email
C. R.
Partner
Mobile Phone
Email
M. S.
Managing Director | Education & Research
Mobile Phone
Email
J. V. O.
Non-Executive Director At Computest Security
Mobile Phone
Email
J. H.
Business Controller
Mobile Phone
Email

DEFION Security Employee Metrics

100%

50%

0%

2026

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Information Security
Administrative
Business
Business Development
Information Technology
Other
Accounting
Arts & Design

Contact profiles from DEFION Security

Name

Title

Contact Info

Location

Last Update

S. V. A.
Interim Recruiter
Mobile Phone
Email
NetherlandsZuid-Holland
Jul 31, 2024

Frequently Asked Questions

What is DEFION Security known for?

DEFION Security was founded in 1997 operates in the Computer and Network Security industry. The company's main headquarters is located in Netherlands. Explore DEFION Security's company overview page for more information.

What is DEFION Security's most common email format?

DEFION Security employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more DEFION Security email formats with LeadIQ.

How many employees does DEFION Security have currently?

DEFION Security has approximately 85 employees as of February 2026. These team members are located across 2 continents, including EuropeAsia.

Who are DEFION Security's key employees and leadership?

As of February 2026, DEFION Security's key employees include:

Chief Executive Officer: H. R.
Cfo Defion Security: T. H.
Chief Client Officer Benelux: T. P.
Head Of Governance & Advisory: R. T.
Partner: C. R.

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