The S-Unit

The S-Unit

Utrecht, Netherlands

Offensive SecurityPenetration TestingIncident ResponseDetection & Response
Serves Enterprise
Profile last updated: August 24, 2026

About

The S-Unit is a cybersecurity company based in Utrecht, Netherlands working in offensive security, penetration testing, incident response +4 more.

The S-Unit is a Dutch cybersecurity company based in Utrecht. It provides penetration testing, red teaming (including modular red teaming aligned with TIBER-NL, ART and ZORRO), offensive security as a service, security consultancy and advisory (including NIS2 guidance, CISO-as-a-service and interim security roles), cybercrisis simulations, and security awareness services such as phishing campaigns, mystery guest tests and training. Its training offering, The S-University, covers general security awareness as well as Mendix secure development and ethical hacking. The company specialises in security testing of Mendix low-code applications and the Mendix platform itself, publishes the Mendix-focused S-Unit Top 10 vulnerability list, and organises capture-the-flag events for the community. Its clients include Mediahuis, Maasstad Ziekenhuis and Riksja Travel. It is a member of the Platform voor Informatiebeveiliging.

Location

Utrecht, Netherlands

Registration

KvK 62085034

Focus areas

penetration testingred teamingMendix securityNIS2security awarenesscapture the flagOSINTcybercrisis simulation

Languages

NLEN

Services & products

Security domains

Offensive SecurityPenetration TestingIncident ResponseDetection & ResponseApplication SecurityGRC & ComplianceSecurity Awareness

How they deliver

Professional ServicesConsultingTraining

Products

CLaaS

Ransomware impact simulation

Self-designed tool that shows clients, in a secure way, the consequences of a ransomware attack for their organisation.

Kraken

Password auditing

Self-designed tool that reveals weak passwords among employees.

Security Awareness Platform

Security awareness training

Platform that makes suitable training material available to the right people at the right time.

Customers

Enterprise

Industries served

HealthcareMediaTravel

Compliance & partners

Compliance frameworks

NIS2ISO 27001NEN 7510TIBER-NLARTZORROOWASP Top 10

Technology partners

MendixFortraEye SecurityOmnext

Credentials & affiliations

Certifications

Mendix security partner

Issued by: Mendix

Industry memberships

Platform voor Informatiebeveiliging

People

Management & team (1)

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