Cloud computing is revolutionizing many ecosystems by providing organizations with
computing resources featuring easy deployment, connectivity, configuration, automation and
scalability. This paradigm shift raises a broad range of security and privacy issues that must
be taken into consideration. Multi-tenancy, loss of control, and trust are key challenges in
cloud computing environments. This paper reviews the existing technologies and a wide
array of both earlier and state-of-the-art projects on cloud security and privacy. We …

Cloud computing offers the prospect of on-demand, elastic computing, provided as a utility
service, and it is revolutionizing many domains of computing. Compared with earlier
methods of processing data, cloud computing environments provide significant benefits,
such as the availability of automated tools to assemble, connect, configure and reconfigure
virtualized resources on demand. These make it much easier to meet organizational goals
as organizations can easily deploy cloud services. However, the shift in paradigm that …