Cloud computing is important in today's computer world, offering users software, platform, and infrastructure services. Virtualization is key for sharing cloud resources, but security is a major concern. Users can access resources anywhere using the internet. Cloud services like IAAS, PAAS, and SAAS provide infrastructure, platform, and software access. However, some people worry about the safety of using cloud resources due to potential information control by vendors. Security issues in cloud computing are common, and this research investigates data security, protection, and issues in the cloud. The paper reviews literature on cloud computing issues and discusses various security concerns.