Future Challenges in Security and Privacy for Academia and Industry 26th IFIP TC 11 International Information Security Conference, SEC 2011, Lucerne, Switzerland, June 7-9, 2011. Proceedings - Camenisch, Jan; Fischer-Hübner, Simone; Murayama, Yuko; Portmann, Armand; Rieder, Carlos (Springer Berlin Heidelberg, 2011)