What departments does DEFION Security NL have?

DEFION Security NL has employees across 13 departments including Engineering, Finance, Information Technology, Research, Military & Protective Services.

What is the largest department at DEFION Security NL?

The largest department at DEFION Security NL is Engineering with 3 employees.

Where are DEFION Security NL employees located globally?

DEFION Security NL has employees across 2 continents and 5 countries including Israel, Netherlands, Spain, Austria, Belgium.

How has DEFION Security NL's team size changed over time?

DEFION Security NL's team has grown from approximately 54 to 64 employees based on available data.

DEFION Security NL Employee Directory

Computer and Network SecurityNetherlands51-200 Employees

DEFION Security NL is an independent cybersecurity provider offering end-to-end services to help organizations manage cyber risk. It uses an Active Defense approach that integrates prevention, detection, and response into a single security strategy. Beyond technical work, it provides executive-level guidance to align cybersecurity with business priorities and support informed investment decisions, while helping clients meet complex regulations such as NIS2, DORA, and CRA. 

The company is based in the Netherlands with additional offices in Spain and employs more than 100 specialists. DEFION Research Labs conducts vulnerability discovery, analyzes emerging threats, and collaborates with public partners to advance security and societal outcomes. In March 2026, the firm announced the launch of managed detection and response services for SURF, with rollout underway alongside partner DTX.

DEFION Security NL Global Highlights

Europe
62

Netherlands
53
Spain
7
Austria
1
Belgium
1

Asia
1

Israel
1

DEFION Security NL's Leadership

H. R.
Chief Executive Officer
Mobile Phone
Email
T. H.
Cfo Defion Security
Mobile Phone
Email
D. D. H. M. M.
Chief Technology Officer Eu
Mobile Phone
Email
J. N.
Chief Information Officer
Mobile Phone
Email
C. R.
Partner
Mobile Phone
Email
T. P.
Managing Director | Chief Client Officer Benelux
Mobile Phone
Email
P. C.
Owner
Mobile Phone
Email
M. S.
Managing Director | Education & Research
Mobile Phone
Email

DEFION Security NL Employee Metrics

100%

50%

0%

2026

2025

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

Contact profiles from DEFION Security NL

Name

Title

Contact

Location

Last Update

D. D. H. M. M.
Chief Technology Officer Eu
Mobile Phone
Email
Sep 02, 2026
C. R.
Partner
Mobile Phone
Email
Austria, Vienna
Mar 24, 2026
H. R.
Chief Executive Officer
Mobile Phone
Email
Netherlands
Sep 11, 2026
T. P.
Managing Director | Chief Client Officer Benelux
Mobile Phone
Email
Netherlands, The Randstad
Jul 09, 2026
T. H.
Cfo Defion Security
Mobile Phone
Email
Aug 16, 2026
P. C.
Owner
Mobile Phone
Email
Netherlands, Flevoland
Sep 05, 2026
J. N.
Chief Information Officer
Mobile Phone
Email
Poland, Masovian Voivodeship
Aug 27, 2026
M. S.
Managing Director | Education & Research
Mobile Phone
Email
Apr 16, 2026
J. V. O.
Non-Executive Director At Computest Security
Mobile Phone
Email
Netherlands, North Brabant
Aug 28, 2026
J. H.
Business Controller
Mobile Phone
Email
Sep 11, 2026

Frequently Asked Questions

What is DEFION Security NL known for?

DEFION Security NL was founded in 1997 and operates in the Computer and Network Security industry. Explore DEFION Security NL's company overview page for more information.

What is DEFION Security NL's most common email format?

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

How many employees does DEFION Security NL have currently?

DEFION Security NL has approximately 93 employees as of August 2026. These team members are located across 2 continents, including Europe and Asia.

Who are DEFION Security NL's key employees and leadership?

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

Chief Executive Officer: H. R.
Cfo Defion Security: T. H.
Chief Technology Officer Eu: D. D. H. M. M.
Chief Information Officer: J. N.
Partner: C. R.

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DEFION Security NL Employee Directory

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