With the rapid development of information technologies and the transition to next-generation networks, computer systems and in particular embedded s- tems are becoming more and more mobile and ubiquitous. They also strongly interact with the physical world. Ensuring the security of these complex and resource-constrained systems is a really challenging research topic. Therefore this Workshop in Information Security Theory and Practices was organized to bring together researchers and practitioners in related areas, and to encourage cooperation between the research and the industrial communities. This was the second edition of WISTP, after the ?rst event in Heraklion, Greece, in 2007. This year again we had a signi?cant number of high-quality submissions coming from many di?erent countries. These submissions re?ected the major topics of the conference, i. e. , smart devices, convergence, and ne- generation networks. Submissions were reviewed by at least three reviewers, in most cases by four, and at least by ?ve for the papers involving Program C- mittee members. This long and rigorousprocess could be achievedthanks to the hard work of the Program Committee members and additional reviewers, listed in the following pages. This led to the selection of high-quality papers that made up the workshop program and are published in these proceedings. A number of posters and short papers were also selected for presentation at the conference. The process was very selective and we would like to thank all those authors who submitted contributions that could not be selected.

This book constitutes the refereed proceedings of the 15th International Workshop on Communication Technologies for Vehicles, Nets4Cars/Nets4Trains/Nets4Aircraft 2020, held in Bordeaux, France, in November 2020. The 18 full papers were carefully reviewed and selected from 22 submissions. The selected papers present orig-inal research results in areas related to the physical layer, communication protocols and standards, mobility and traffic models, experimental and field operational testing, and performance analysis.

The first book to focus on the communications and networking aspects of UAVs, this unique resource provides the fundamental knowledge needed to pursue research in the field. The team of authors covers the foundational concepts of the topic, as well as offering a detailed insight into the state of the art in UAVs and UAV networks, discussing the regulations, policies, and procedures for deployment (including analysis of risks and rewards), along with demonstrations, test-beds, and practical real-world applications in areas such as wildlife detection and emergency communications. This is essential reading for graduate students, researchers, and professionals in communications and networking.