International Journal Of Electronics,Communication And Soft Computing Science &Engineering (IJECSCSE)
Cloud computing is a modern technology that realizes the dream of on demand, virtualized, scalable and economical internet based computing. However, there are number of threats which make cloud vulnerable. Data storage and backup service of cloud can suffer due to data loss, external security breach or malicious attack from within the cloud itself. The virtualized and multitenant nature of cloud make data security attacks more intense and diversified. Encryption is the most effective method to protect integrity and security of cloud data storage.