Abstract Cloud Computing renders useful services over the Internet by increasing resource utilization and computational services at a decreased cost along different sectors. Data owners outsource their private data on cloud environment leading to loss of physical control over data. Security solutions provided in the literature to safeguard the data mainly focus on authentication and authorization. Data privacy preservation is one... Cloud Computing renders useful services over the Internet by increasing resource utilization and computational services at a decreased cost along different sectors. Data owners outsource their private data on cloud environment leading to loss of physical control over data. Security solutions provided in the literature to safeguard the data mainly focus on authentication and authorization. Data privacy preservation is one of the key areas in providing data security to ensure privacy guarantees for sensitive data namely health records, financial data, personal identities by providing strong end-to-end privacy. In this paper, the authors classify challenges in data privacy preservation based on the nature of mechanisms and type of data stored in cloud environments. The paper presents a detailed analysis of the literature in terms of methodologies adopted, algorithms proposed and cloud security performance metrics. Read More Read Less

Abstract The concept of system resilience is important and popular in different domains like psychology, psychiatry, sociology, and more recently in cognitive science, biological disciplines, ecology and computer science. The main objective of this paper is to present a research avenue exploring the applicability of knowledge from those domains to solve resilience problems in cyber-physical systems. Emotions have been identified as an important process... The concept of system resilience is important and popular in different domains like psychology, psychiatry, sociology, and more recently in cognitive science, biological disciplines, ecology and computer science. The main objective of this paper is to present a research avenue exploring the applicability of knowledge from those domains to solve resilience problems in cyber-physical systems. Emotions have been identified as an important process to cope with unexpected events and is therefore crucial for resilience. Our work is thus aimed at utilizing emotion-like processes in cyber-physical systems to improve their resilience, at individual and collective levels. Furthermore, one of our main assumptions is that the multi-agent paradigm is particularly well suited to embed such emotion-like processes in this type of systems. Read More Read Less