Cloud computing has gotten to be a well-known worldview for giving on-demand get to shared computing assets. Be that as it may, as more information is being exchanged and put away within the cloud, concerns approximately information security and security have risen. Potential dangers to cloud computing include threats to data and inadequate security. Before organizations switch, security issues need to be properly evaluated. The goals of this study are to define cloud computing and cyber assaults against cloud infrastructure. In any case, servers and administrations are harmed by cryptography, conveyed refusal of benefit, and flooding attacks. In general, cloud security and cryptography play a basic part in guaranteeing the privacy, judgment, and accessibility of information within the cloud. As more companies go ahead with their information to the cloud, it is critical to proceed to create and actualize strong security measures to ensure against potential dangers and assaults. This study intends to illustrate cloud computing and risks & issues. The following research is to find solutions when the cloud security issues have been found.