Philippe Aigrain European Commission, Directorate-General Information Society E2 Philippe Aigrain was Head of Sector "Software Technologies" in the unit "Technologies and Engineering for Software, Systems and Services" of the European Commission Information Society Technologies R&D Programme. He was trained as a mathematician and theoretical computer scientist, and holds a Doctorat and the Habilitation à Diriger les Recherches from University Paris 7. From 1972 to 1981, he worked in software engineering research labs of software companies. He was a research fellow at U.C. Berkeley in 1982. Since then, and before joining the European Commission in 1996, he headed research teams in the field of computer processing, indexing, retrieval and interaction for audiovisual media (video, music, still images). He his the author of more than 60 technical papers, as well as of papers on the economy and sociology of information exchanges. email:paigrain@acm.org       Laurent Cabirol European Commission, Directorate-General Information Society 1 After his degrees in applied physics in 1982 in University Pierre et Marie Curie in Paris, Laurent began to work for the CEA, the French Atomic Energy Agency, in robotics. Further step lead him to SCSSI, the French Agency for information System Security where he was mainly concerned by standardisation and european affairs. Following this, he was consultant in the information society domain for the French research minister. He is now working for the European Commission in the directorate general "Information Society" in the "Analysis and Policy planning unit" where he is mainly involved in information society security issues. email: Laurent.CABIROL@cec.eu.int       Michel Lacroix European Commission, Directorate-General Information Society E2