Nuno Santos is a software engineer at WIT-Software, a software company in the area of mobile telecommunication networks. He has been involved in several projects, the most relevant ones being the development of a platform for Digital Rights Management for J2ME applications and a Java based router for SMSC protocols. Before joining WIT-Software, he was a researcher at University of Coimbra, working on the topics of security for mobile code systems and runtime code instrumentation, both for the Java and for Microsoft .Net platforms. While taking his MSc he was a summer student at Ericsson EED (Germany) and at CERN (Switzerland). He holds a B.Sc. in Mathematics and a M.Sc. in Computer Engineering from the University of Coimbra (Portugal).