ENISA is proud to be working with eema, TeleTrusT, NASK (the Polish research and development organization and leading Polish data networks operator) and the German Federal Ministry of the Inte rior as well as the German Federal Offce for Information Security for this year's 9th annual Information Security Solutions Europe Confer ence. The aimof the ISSE has always been to support the developmentof a European information security culture and especially a cross border framework for trustworthy IT applications for citizens, industry and administration. ENISA is committed to these goals. In our work we assist and advise the European Commission, Member States as well as business community on network and information security as well as on legislative requirements, and we are delighted to support the ISSE again this year. The security of communication networks and information systems is of increasing concern. In order to face today's complex information security challenges it is clear that working collaboratively with one another is the key to generating new strategies to address these problems. It has been an exciting opportunity to facilitate this collaboration at the ISSE 2007, pulling together the wealth of industry knowledge, information and research that we hold in Europe, as well as across the globe. The success of this event in generating ideas and frank, lively debate around the complex topic of IT security is due also to the independent, varied nature of the programme, which was selected by world wide specialists in the feld.