Welcome to the Internet presence of Jeroen Massar.
This website contains all kinds of tidbits that you might not want to know about me.
For the folks who don't know me from work, and thus ask what I do for a living, I'll typically answer "I play with the Internet".
A bit better summary could be "I design and build secure privacy centric tools for improving Internet communication between people and machines". The in-depth explanation can be discovered by browsing my publications, presentations and project pages because, indeed, there is quite a lot more to it.