The third international workshop on AD-HOC NetwOrks and Wireless was held in the downtown Vancouver facilities of Simon Fraser University. The ?rst ADHOC-NOW was held in 2002 at the Fields Institute in Toronto and the s- ond in 2003 in Montreal. Its purpose is to create a collaborative forum between Mathematicians, ComputerScientistsandEngineersforresearchintheemerging ?eld of ad-hoc networks. The number of submissions exceeded all expectations this year. Over 150 papers were submitted of which 22 regular and 8 short papers were accepted for presentation and inclusion in the conference proceedings. The program comm- teeconsistedofMichelBarbeau, StefanoBasagni, AzzedineBoukerche, Soumaya Cherkaoui, Leszek Gasieniec, Janelle Harms, Jeannette Janssen, Christos K- lamanis, Evangelos Kranakis, Danny Krizanc, Thomas Kunz, Ramiro Liscano, Lata Narayanan, Ioanis Nikolaidis, Stephan Olariu, Jaroslav Opatrny, Pino P- siano, Samuel Pierre, S.S. Ravi, Mazda Salmanian, Sunil Shende, Ladislav S- cho, Martha Steenstrup, Ivan Stojmenovic, Violet Syrotiuk, Ljiljana Trajkovic, Jorge Urrutia, Peter Widmayer, and Kui Wu. We would like to thank the invited speaker Martha Steenstrup for her - search presentation and the program committee for refereeing the submissions. Many thanks to Paul Boone, Jen Hall, Jo-Ann Rockwood, Zheyin Li, and Tao Wan for helping with the workshop logistics. Special thanks go to MITACS (MathematicsofInformationTechnologyandComplexSystems)andPIMS(- ci?c Institute for the Mathematical Sciences) for supporting the workshop ?n- cially, CarletonUniversityandtheUniversityofAlbertaforprovidingcomputing facilities, and Simon Fraser University for its hospita

AdHoc Networks are wireless, self-organizing systems formed by co-operating nodes, within communication range of each other which form temporary n- works. Their topology is dynamic, decentralized, and ever-changing, and the nodes may move around arbitrarily. The last few years have witnessed a wealth ofresearchideasonAdHocnetworkswhicharemovingrapidlyintoimplemented standards. Mobile computing, particularly wireless-enabled mobile computing, covers a large area of applications in mobile computing environments, networking, c- municationdevicesandsystems.Thisconferenceexposesexperimentalaswellas theoretical research in adhoc, mobile and wireless networks. The range of topics covered includes management of power consumption, architectures and pro- cols, quality of service, and security. The aim of the conference was to provide a unique opportunity for researchers and students in industry and academia to participate at an annual forum and share their research results and experiences. This conference followed the ?rst successful conference (held at the Fields - stituteinTorontoduringSeptember20-21oflastyear),andwasheldattheH- iday Inn, Midtown in Montreal during October 8-10, 2003. It was co-sponsored by the Mobile Computing and Networking Research Laboratory (LARIM) of the ' Ecole Polytechnique de Montr' eal, theSchool of Computer Science (SCS) of C- leton University, MITACS (Mathematics of Information Technology and C- plex Systems), and the Association for Computing Machinery (ACM).

This book constitutes the revised selected papers of the 12th International Symposium on Foundations and Practice of Security, FPS 2019, held in Toulouse, France, in November 2019.The 19 full papers and 9 short papers presented in this book were carefully reviewed and selected from 50 submissions. They cover a range of topics such as machine learning approaches; attack prevention and trustworthiness; and access control models and cryptography.