Progress in Privacy Protection: A Review of Privacy Preserving Techniques in Recommender Systems, Edge Computing, and Cloud Computing

As digital technology evolves, the increasing use of connected devices brings both challenges and opportunities in the areas of mobile crowdsourcing, edge computing, and recommender systems. This survey focuses on these dynamic fields, emphasizing the critical need for privacy protection in our increasingly data-oriented world. It explores the latest trends in these interconnected areas, with a special emphasis on privacy and data security. Our method involves an in-depth analysis of various academic works, which helps us to gain a comprehensive understanding of these sectors and their shifting focus towards privacy concerns. We present new insights and marks a significant advancement in addressing privacy issues within these technologies. The survey is a valuable resource for researchers, industry practitioners, and policy makers, offering an extensive overview of these fields and their related privacy challenges, catering to a wide audience in the modern digital era.