Hi. I am Jaap-Henk Hoepman.

Because we have become increasingly dependent on information technology, I believe it is important that that we, users individually as well as society as a whole, remain in control. This means we must do all that is necessary to ensure that the technology is open, transparent, reliable, trustable, secure and aligned with our digital liberties. I think different professionals (engineers, legal scholars, social scientists and even artists) can learn from each other’s approaches and results. We should join forces to shape our future in this new world.


I am an associate professor in privacy enhancing protocols and privacy by design at the Digital Security group of the Institute for Computing and Information Sciences of the Radboud University Nijmegen, the Netherlands. I am also scientific director of the Privacy & Identity Lab. I write a monthly column in the Dutch national newspaper FD and I am a regular guest on the Dutch national radio 1 news show Nieuws en Co.

My research is inspired by practical problems. I study privacy by design, and privacy friendly protocols for identity management and the  Internet of Things. I enjoy talking about my research, and speaking about it in public to a general audience. That is also one of the main reasons to maintain this blog.

In my free time I enjoy making my own music, designing visuals, and practice Okinawan Goju Ryu karate-do.

This blog expresses personal views and does not express the views of the Radboud University.

About XOT

Sometimes people wonder why my blog is hosted on the domain xot.nl (and why my Twitter handle is @xotoxot).

XOT stands for the three symbols you see (from top to bottom) on the main page of my website. These symbols stand for “head”, “belly”, “bottom” respectively. And from that everything else follows.

As for my Twitter handle… @xot was already taken (but not used at all…)


I enjoy talking about information technology, explaining it to laypersons, and to show how technology can both severely damage our privacy as well as protect our privacy (when properly designed). Please contact me or see my speakers profile (in Dutch).


You can reach me or connect to me here:

Email: info@nullxot.nl
Twitter: @xotoxot
Linkedin: https://www.linkedin.com/in/jaap-henk-hoepman/

Www: My homepage at the Radboud University