I am available as a freelance Information Security Consultant in the general area of

  • Code audits and review
  • Pentesting of web infrastructure, networks and hosts
  • Development and operation of custom fuzzing setups
  • Custom security research for your project, including hardware topics

Please see some of my published work on this site as a reference.

Contact

Feel free to reach out to discuss potential projects and offers:

  • Via email at target
  • Via Matrix at target

My PGP key is available on request.

I’m part of the Radically Open Security Security Consultants team

  • Performing various types of pentests and audits for company clients
  • Reviewing open source software including some of the NLnet foundation projects
  • If you need multiple pentesters on the project, you can contact ROS here

Public Client: Satoshilabs

  • Securing the Trezor cryptocurrency hardware wallet product line through advanced fuzzing research and code reviews
  • Consulting for SatoshiLabs October 2019 - March 2025
  • Previous independent research on the Trezor is going back to 2018

Published Client Work

Year Description Document
2024 NLnet NGI Zero Core rpgp Security Evaluation Report (PDF)
2023 NLnet NGI Review Pendulum Project ntpd-rs Security Evaluation Report (PDF)
2022 NLnet NGI0 openEngiadina Quick Security Evaluation Summary (PDF)
2021 BlockchainCommons cryptographic libraries Review Report (PDF)
2020 Polychain Laptop Security Review Report (PDF)