4th Intl. Workshop on Quantitative Aspects of Security Assurance (QASA 2015) co-located with ESORICS 2015 (Sep 21-25 2015, Vienna) http://www.iit.cnr.it/qasa2015 **** Preliminary Call for papers **** Overview: There is increasing need to provide quantification of security assurance over the multi-level development life-cycle of systems & services, e.g., from requirements elicitation to run-time operation and maintenance. Addressing such quantitative aspects, the QASA workshop aims to bring together researchers and practitioners interested in the quantification research dimensions spanning dependability, security, privacy and risk, and with particular emphasis on techniques for service oriented architectures, IoT and cyber-physical systems. The list of topics includes, but it is not limited to: -Assurance cases modeling and analysis -Game theoretical models for cyber insurance -Incremental/modular security assurance analysis -Metrics for trust, security and privacy -Model-based techniques for assurance -Process compliance assurance techniques -Probabilistic/stochastic model checking -Quantitative information flow analysis -Quantitative issues in access and usage control -Security testing techniques -Simulation techniques for security, privacy, risk -Static/dynamic code analysis techniques -Tool support for quantitative security assurance Submission dates: Submission: June 21 2015 Notification: July 28 2015 Camera ready pre-procs: August 20 2015 Final post-procs: October 2015 Workshop organizers: Alessandro Aldini, Univ. of Urbino Fabio Martinelli, CNR Neeraj Suri, TU Darmstadt PC members (TBC): Andrea Bondavalli, Univ. of Florence Tom Clothia, Univ. of Birmingham Jorge Cuellar, Siemens Frédéric Cuppens, Telecom-Bretagne Joaquin Garcia Alfaro, Telecom-SudParis Javier Lopez, Univ. of Malaga Jesus Luna, CSA Cathy Meadows, NRL Charles Morisset, Univ. of Newcastle Pierangela Samarati, Univ. of Milan Reijo Savola, VTT Ketil Stoelen, SINTEF Lorenzo Strigini, City London University Herbert Wiklicky, ICL Program & Proceedings The program will consist of invited speakers as well as of presentations of submitted papers. As in previous edition, revised version of the selected papers are expected to be published in a volume of the Lecture Notes in Computer Science series of Springer. Journal special issue is also planned. Contact:Email: qasa2015@iit.cnr.it