Abstract
Cloud Computing is becoming the heart or the central theme for all sort of
computing. Cloud is a remote place, at which user can upload data, can download data, can do
processing of data, etc. Cloud provides space, computing power, platform and many more
services on rent. This paper presents a brief introduction to the concept of clouds & its services.
This paper also presents the issues related to the security of data in cloud environment. A few
modern attribute based encryption models for the data security have been discussed.