On behalf of the Program Committee, it is our pleasure to present to you the proceedings of the 8th Conference on Detection of Intrusions and Malware & Vulnerability Assessment (DIMVA 2011). Each year DIMVA brings together international experts from academia, industry and government to present and discuss novel security research. DIMVA is organized by the Special Interest Group Security – Intrusion Detection and Response (SIDAR) – of the German Informatics Society (GI)

The DIMVA 2011 Program Committee received 41 submissions. All submissions were carefully reviewed by at least three Program Committee members or external experts. The submissions were evaluated according to the criteria of scientific novelty, importance to the field and technical quality. The final selection took place at a Program Commitee meeting held on March 25, 2011, at Ruhr-University Bochum, Germany. Eleven full papers and two short papers were selected for presentation at the conference and publication in the conference proceedings. The conference took place during July 7-8, 2011, at Vrije Universiteit Amsterdam, The Netherlands. The program featured both practical and theoretical research results grouped into five sessions. The keynote speech was given by Manuel Costa, Microsoft Research. Another invited talk was presented by Ahmad-Reza Sadeghi, TU Darmstadt. The conference program further included a poster session.

We sincerely thank all those who submitted papers and posters as well as the Program Committee members and our external reviewers for their valuable contributions to a great conference program. In addition we thank Marc K¨uhrer for helping during the preparation of these proceedings. For further details about DIMVA 2011, please refere to the conference website at http://www.dimva.org/dimva2011.