Pierpaolo, aka yrz, got involved in a number of opensource projects,
among them it's worth to remember mod_protection, jabber SMS and
He spent some years as a researcher for Hitachi Europe, Vrije University of Amsterdam...
Jaap-Henk Hoepman is senior scientist at TNO and associate professor of computer science at the Radboud University Nijmegen. His main research interest is the design of secure and privacy friendly protocols for pervasive systems (e.g. the internet of things). In his free time he enjoys making his own music, designing visuals, and practice Okinawan Goju Ryu karate-do.