Gurpreet Dhillon, Fredrik Karlsson, Karin Hedström, André Zúquete: ICT Systems Security and Privacy Protection - 34th IFIP TC 11 International Conference, SEC 2019, Lisbon, Portugal, June 25-27, 2019, Proceedings. IFIP Advances in Information and Communication Technology 562, Springer 2019, ISBN 978-3-030-22311-3