This volume contains the papers presented at NordSec 2008, the 13th Nordic Workshop on
Secure IT-Systems. In 1996 the NordSec workshop series was started as a conference targeting
post-graduate students, aiming at bringing researchers and practitioners from industry together.
In 2008 we are emphasizing this goal by organizing NordSec as part of the “Nordic Security
Days”. Other events in this week include a one-day workshop on “Security for the Citizens”,
where Danish research projects present their results to industry, a meeting of students enrolled in
the Erasmus Mundus Master’s Programme in Security and Mobile Computing “NordSecMob”,
and a meeting of the FIRST research school.
We received a total of 39 submissions in response to the call for papers, and the programme
committee selected 17 of these for presentation at the workshop—one short paper, which is not
included in the proceedings, and 16 research papers. It was a pleasure for us to work with the
program committee, and we want to thank both them and the additional reviewers. Beside
the submitted contributions we invited Audun Jøsang, University of Oslo, and Michael Huth,
Imperial College London, to speak at the workshop. Abstracts of their talks are included in the
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