Mark Heijblok (He/Him)

Researcher level 2 at Dutch Institute for Vulnerability Disclosure

I have always been keen on breaking and hacking stuff. Until 2009 I did that mostly for hobby and fun. After 2009 it became my main source of income. Joined the DIVD in 2022 to help other hackers and disclose vulnerabilities.


Work style

How I prefer to work



Mostly on my own

Qualities I value in my colleagues

  • Creativity
  • team spirit
  • sense of humor
  • self-motivation

My communication style

  • Open
  • direct
  • positive
  • articulate

My pet peeves

  • Arrogance
  • inauthenticity
  • politics
  • disloyalty
  • gossip

Fun fact

I am also deeply involved in the tuning of two-stroke engines.


  • Researcher level 2

    Current role

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