International Journal of Computer Applications
As everyone all knows cloud computing is an emerging field in the world of computation and security of the data must be confined over the network. There are some security issues occurring while using services over the cloud and stress of the authors' study is the multi-tenancy issue. Many organizations now-a-days are looking for improving security while sharing resources, application etc. on same hardware and same software by implementing multi-factor authentication i.e. authentication requiring more than one independent mechanism to prove one's identity like one-time passwords.