Insights

Strategic MDR DEFION Security recently launched MDR services for SURF, signaling a scalable managed detection and response capability that can be offered to similar government and large enterprise clients seeking enhanced threat monitoring and rapid incident containment.

Integrated Security The company combines prevention, detection, and response into a single integrated strategy, presenting sales opportunities to organizations needing a holistic cybersecurity program aligned with business priorities and executive-level risk governance.

Regulatory Compliance DEFION emphasizes helping clients comply with complex regulations such as NIS2, DORA, and CRA, suggesting cross-sell potential into sectors with heavy regulatory burdens like finance, energy, and critical infrastructure.

Research to Resilience Through DEFION Research Labs, there is a narrative for offering vulnerability discovery and threat intelligence services to customers seeking proactive threat hunting and security posture benchmarking.

Regional Expansion With offices in the Netherlands and Spain and a growing expert team, there is an opportunity to target multinational firms with regional security needs and to upsell managed services across Europe.

Similar companies to DEFION Security NL

DEFION Security NL Tech Stack

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

DEFION Security NL's Email Address Formats

DEFION Security NL uses at least 5 email formats:
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.

How much revenue does DEFION Security NL generate?

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As of August 2026, DEFION Security NL's annual revenue is estimated to be $25M - $50M.

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 August 2026, DEFION Security NL has approximately 93 employees across 2 continents, including Europe and Asia. Key team members include Chief Executive Officer: H. R., Cfo Defion Security: T. H. and Chief Technology Officer Eu: D. D. H. M. M. 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 LinkedIn Ads, Hotjar, Nessus, Splunk, 1Password, Microsoft Defender, Microsoft Sentinel and DigitalOcean Web Hosting.

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

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