Abstract: Cloud computing is not something that suddenly appeared overnight. It may trace back to a time when computer systems remotely time-shared computing resources and applications. Cloud computing refers to the many different types of services and applications. These applications are delivered in the internet cloud. In the cloud computing the information is share between various users. Hence security and privacy are the two main challenges that are presents in the cloud computing. In our paper we are working on the security of cloud computing. To enhance the security of cloud computing, we are going to use RSA and image sequencing password.

Keywords: Security, RSA, Image Sequencing password, Attacks, Cloud Services.