Cloud computing is a long‐standing dream of computing as a utility, where users can store
their data remotely in the cloud to enjoy on‐demand services and high‐quality applications
from a shared pool of configurable computing resources. Thus, the privacy and security of
data are of utmost importance to all of its users regardless of the nature of the data being
stored. In cloud computing environments, it is especially critical because data is stored in
various locations, even around the world, and users do not have any physical access to their …

… This article has been retracted by Hindawi, as publisher, following an investigation
undertaken by the publisher [1]. This investigation has uncovered evidence of systematic
manipulation of the publication and peer-review process. We cannot, therefore, vouch for
the reliability or integrity of this article. … Wiley and Hindawi regret that the usual quality
checks did not identify these issues before publication and have since put additional
measures in place to safeguard research integrity. We wish to credit our Research Integrity …