  Today, in the world of communication, connected systems is growing at a rapid
pace. To accommodate this growth the need for computational power and storage
is also increasing at a similar rate. Companies are investing a large amount of
resources in buying, maintaining and ensuring availability of the system to
their customers. To mitigate these issues, cloud computing is playing a major
role.The underlying concept of cloud computing dates back to the 50's but the
term entering into widespread usage can be traced to 2006 when Amazon.com
announced the Elastic Compute Cloud.In this paper, we will discuss about cloud
security approaches. We have used the term Cloud-Drain to define data leakage
in case of security compromise.
