Abstract
A favorable development of the public cloud infrastructure requires data protection which provides the assurance with the well implement of the infrastructure as supposed, both for the cloud user as well as the cloud provider. Still, data protection is not so far presented with the appropriate attention. In this paper, we have introduced the possible risks that data can experience throughout cloud transfer and also recovery. Hence, we introduced various known attacks and subsequently discussed the advantages as well as the disadvantages of the diverse techniques suggested in the literature for restraining the effects of these last ones.