The Fourth International Workshop on Adaptive and Personalized Privacy and Security (APPS 2022) aims to bring together researchers and practitioners working on diverse topics related to understanding and improving the usability of privacy and security software and systems, by applying user modeling, adaptation and personalization principles. The fourth edition of the workshop includes interdisciplinary contributions from Austria, Belgium, Cyprus, Germany, United Kingdom, and the United States of America, that introduce new and disruptive ideas, suggest novel solutions, and present research results about various aspects (theory, applications, tools) for bringing user modeling, adaptation and personalization principles into privacy and security systems. This summary gives a brief overview of APPS 2022, held both virtually and physically from Barcelona, Spain, in conjunction with the 30th ACM Conference on User Modeling, Adaptation and Personalization (ACM UMAP 2022).</p
