DefZero

About DefZero

Are you a CTO, CISO, or IT Manager struggling with persistent security challenges? At DefZero, we’re a cybersecurity consultancy serving SMEs, startups and even large organisations, worldwide. We understand the headaches that come with securing complex IT environments. Whether you’re in the Netherlands or anywhere else, we’re accessible and agile, offering personalized support via Signal, WhatsApp, or on-site.

Key Pain Points We Address:

Insecure GenAI System Design AI solutions may be deployed without the right security architecture, governance, access controls, monitoring, or resilience.

Outdated Legacy Systems We modernize and secure your infrastructure to reduce risk and improve performance.

Overwhelmed by Vulnerability Management We help you identify and prioritize vulnerabilities, turning chaos into clarity.

Inefficient Asset Management We bring order and control to your asset landscape, so nothing slips through the cracks.

Software Vulnerabilities Our training and advisory ensure your team builds secure applications from day one.

Why DefZero? Our Consultants have a combined multicultural experience of 40+ Years.

No Red Tape, just Effective Security We believe in simple, actionable solutions.

Tailored Services From AI large language model assessments to hands-on incident response (informally offered), we’re here to help.

Community Contributions

File Armour: A secure file-sharing platform (Lite version free, no sign-up or paywalls). Try it: lite.filearmour.eu More info: defzero.net/file-armour

Domain Analysis Tool: Perform fast OSINT on domains/IPs. Try it: www.defzero.net/dat

Stay Informed We maintain a blog covering the latest cybersecurity insights for decision-makers and technical teams.

Contact Us: Signal/WhatsApp: +31 641670882

Emergency: sos@defzero.net

General Inquiries: info@defzero.net

If these challenges sound familiar, let’s talk about how DefZero can help.

Keywords

• Cyber Security Trainings
• Technical Security Assessment

Address

• Headquarters

  Netherlands

Team by function

Based on 2 public job profiles as of 3 September 2026.

• Founder / Owner1
• IT / Infrastructure / Security1