Welcome to the European Symposium on Research in Computer Security (ESORICS) 2013 Web Site. This is the 18th symposium in the ESORICS series. This year the Symposium will be held in Egham U.K. at Royal Holloway, University of London on 9th – 11th September 2013. There are also eight co-located workshops that will be held in conjunction with the Symposium, on 12th – 13th September 2013. Computer security is concerned with the protection of information in environments where there is a possibility of intrusion or malicious action. The aim of ESORICS is to further the progress of research in computer security by establishing a European forum for bringing together researchers in this area, by promoting the exchange of ideas with system developers and by encouraging links with researchers in related areas.