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Adriaan Van Der SteegAV

Adriaan Van Der Steeg

Digital Forensics & OSINT Expert

€600/day
Utrecht, NL
15+ years

Average response time: 2 hours

About Adriaan

If you need clarity, proof, or answers in a digital situation, I help you get them, fast, accurate, and legally defensible.
Clients hire me when they need to verify evidence, identify who’s really behind an online identity, or understand exactly what happened in a digital incident.

With 20+ years of investigative experience in both the public and private sector, and certifications in digital forensic analysis, digital forensics, and security (GCFA, GCFE, CISSP, CISM), I provide investigations that hold up under scrutiny.

What I deliver:
• Evidence verification to confirm whether files, emails, documents, or messages are authentic or manipulated
• Deep OSINT investigations that reveal hidden links, patterns, identities, and digital footprints
• Digital forensic investigation and compromise analysis that explain the “what, how, and who” behind an event
• Court-ready forensic reports built on proper chain-of-custody and clear, defensible methodology
• Online identity investigation when you need to know who is behind an account or digital activity

All work is done legally, ethically, and confidentially.
If you need reliable answers, verified evidence, and a specialist who can translate complex digital findings into clear conclusions, I deliver exactly that.
  • English

    Native or bilingual

  • Dutch

    Native or bilingual

Can work on-site
Utrecht (up to 50km)

Experience

  • MDM Security & Investigations
    Principal investigator, Digital Forensics and OSINT
    DIGITAL AND IT
    January 2026 - Today (5 months)
    Providing independent digital forensic and OSINT services for private clients, law firms and organizations. Conducting post-incident forensic reviews, mobile and computer forensics, online attribution and due-diligence investigations. Responsible for evidence handling, chain of custody, technical analysis and court-ready reporting.
    digital forensics OSINT
  • Dutch National Police
    Digital Forensic Investigator / Operational Specialist B
    June 2019 - Today (7 years)
    Performing (digital) investigations in the broadest sense at the Dutch National Police. Acquiring and analyzing digital evidence of all kinds of devices, maintaining chain of evidence and custody as required by law. Improving guidelines and setting up standard operating procedures for fellow investigators. Interrogating suspects and witnesses, writing reports for use in court. Experience with covert operations, including static and dynamic observations. Also active as a part-time teacher at the Police Academy. Subjects include mobile phone forensics, OSINT and Cybercrime.
  • Organisation for Security and Cooperation in Europe (OSCE)
    OSINT and Cybercrime Teacher
    January 2022 - Today (4 years and 5 months)
    Delivering and creating training courses on the following topics: handling digital evidence, Darkweb and virtual currencies, OSINT and Internet investigations, open-source digital forensics. The objective of this project is to build up training capacities of five OSCE states in Central Asia, namely Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan, to sustainably educate and train their police officers and prosecutors on various aspects of combating cybercrime.

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Education

  • licenses: B, C1
    licenses: B, C1
  • Certified Information Security Manager (CISM)
    IACA
    2025
    Certified Information Security Manager (CISM)

Skill set

Categories