Now-a-days, many IT organization wish to go for cloud computing environment, as there are various advantages of preferring this environment. Many techniques and methods are used to build this cloud environment in order to provide secure access to cloud. Cloud user become free from different data management task, as this data management is done by the Third Party expert Auditor (TPA). But still there are certain security issues of this third party auditor as during this audit TPA can get access to the data in the cloud. Security in cloud has become the most on demand issue to be addressed in cloud computing environment.