Foreword. 11th International Workshop on Security in Information Systems, WOSIS 2014

The Eleventh International Workshop on Security in Information Systems - WOSIS 2014 was organized in conjunction with ICEIS 2014 in Lisbon, Portugal. As in previous years, this workshop is primarily focused on high quality and innovative research papers from different fields related to the most recent developments in Security in Information Systems. In this edition, the workshop has incorporated new topics related to security in Big Data. In this edition, we had the pleasure of count with Paolo Girgini as keynote speaker with a keynote entitled ""Socio-Technical Security Requirements Modeling and Analysis"". We would like to specially thank Paolo Giorgini for accepting our proposal and for his speech that was very interesting for WOSIS's attenders. Papers presenting the most recent theoretical, and practical works in security for Information Systems were received, a total of 16 submissions. All the submissions were reviewed by at least two program committee members. Finally, 5 papers have been accepted and 3 short papers will also have the chance to be presented during the sessions due to the excellent quality of the research. We would like to thank all the authors who took the time to submit papers to WOSIS, even though they were not finally accepted. We would also to express our gratitude for the excellent work done by the Program Committee and the members of the Organisation Committee.