  Cloud computing offers users scalable platforms and low resource cost. At the
same time, the off-site location of the resources of this service model makes
it more vulnerable to certain types of adversarial actions. Cloud computing has
not only gained major user base, but also, it has the features that attackers
can leverage to remain anonymous and stealth. With convenient access to data
and technology, cloud has turned into an attack platform among other
utilization. This paper reports our study to show that cyber attackers heavily
abuse the public cloud platforms to setup their attack environments and launch
stealth attacks. The paper first reviews types of attacks launched through
cloud environment. It then reports case studies through which the processes of
launching cyber attacks using clouds are demonstrated.
