Insights

Public Sector MDR DEFION's new MDR rollout for SURF demonstrates capability to deliver managed detection and response to public sector and research networks, signaling a strong sales angle to win similar contracts with universities, government bodies, and EU public entities seeking compliant, ongoing monitoring and incident response.

Regulatory Focus DEFION positions itself around regulatory compliance with NIS2, DORA and CRA, offering gap assessments and governance aligned security programs for regulated industries such as financial services, energy, transport and critical infrastructure looking to meet strict cyber resilience requirements.

Executive Advisory The integrated security strategy combines prevention, detection and response with executive-level advisory, enabling boards and risk officers to align cybersecurity with business priorities and justify cybersecurity investments.

Threat Research Edge DEFION Research Labs delivers ongoing threat intelligence, vulnerability discovery and threat dissections, offering customers proactive threat intel and vulnerability management to reduce exposure and inform security roadmaps.

EU Delivery With offices in the Netherlands and Spain and a significant expert workforce, DEFION can serve cross-border EU clients, expanding deployments and multi-country programs while maintaining consistent security controls and reporting.

DEFION Security NL Tech Stack

DEFION Security NL uses 8 technology products and services including Hotjar, Nessus, Open Graph, and more. Explore DEFION Security NL's tech stack below.

  • Hotjar
    Analytics
  • Nessus
    Application Security Testing
  • Open Graph
    Content Management System
  • NIS2
    Risk And Compliance
  • Bootstrap
    UI Frameworks
  • Tailwind CSS
    UI Frameworks
  • Cloudflare Insights
    Web Analytics
  • Caddy
    Web Servers

DEFION Security NL's Email Address Formats

DEFION Security NL uses at least 2 format(s):
DEFION Security NL Email FormatsExamplePercentage
FLast@computest.nlJDoe@computest.nl
64%
First@computest.nlJohn@computest.nl
16%
FMiddleLast@computest.nlJMichaelDoe@computest.nl
16%
FirstLast@computest.nlJohnDoe@computest.nl
4%
FLast@defion.securityJDoe@defion.security
100%

Frequently Asked Questions

What is DEFION Security NL's official website and social media links?

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DEFION Security NL's official website is defion.security and has social profiles on LinkedIn.

What is DEFION Security NL's NAICS code?

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DEFION Security NL's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does DEFION Security NL have currently?

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As of July 2026, DEFION Security NL has approximately 92 employees across 2 continents, including EuropeAsia. Key team members include Chief Executive Officer: H. R.Cfo Defion Security: T. H.Partner: C. R.. Explore DEFION Security NL's employee directory with LeadIQ.

What industry does DEFION Security NL belong to?

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DEFION Security NL operates in the Computer and Network Security industry.

What technology does DEFION Security NL use?

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DEFION Security NL's tech stack includes HotjarNessusOpen GraphNIS2BootstrapTailwind CSSCloudflare InsightsCaddy.

What is DEFION Security NL's email format?

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DEFION Security NL's email format typically follows the pattern of FLast@computest.nl. Find more DEFION Security NL email formats with LeadIQ.

When was DEFION Security NL founded?

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DEFION Security NL was founded in 1997.
DEFION Security NL logo

DEFION Security NL

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.

Section iconCompany Overview

NAICS Code
5415 - Computer Systems Design and Related Services
Founded
1997
Employees
51-200

Section iconFunding & Financials

  • $25M$50M

    DEFION Security NL's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    DEFION Security NL's revenue is estimated to be in the range of $25M$50M

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