www.rspsciencehub.com Volume 03 Issue 07S July 2021 International Research Journal on Advanced Science Hub (IRJASH) 138 Special Issue of First International Conference on Social Work, Science & Technology (ICSST 2021) A Scrutiny on Cloud Computing Security Issues S. Jenifa Sabeena 1 , Dr. S. Antelin Vijila 2 1 Research Scholar, Department of Computer Science and Engineering, Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu. 2 Assistant Professor, Department of Computer Science and Engineering, Manonmaniam Sundaranar University, Tirunelveli, Tamil Nadu. jenifasabeena1996@gmail.com 1 , antelinvijila@gmail.com 2 Abstract Cloud computing is one of the widely used technology in the 20 th century. Cloud has become an essential part in our day-to-day life, because the data are stored in the cloud in any one form such as Gmail, Google Drive etc. As the users store sensitive information in the cloud, the Cloud Service Providers need to provide proper data security for data stored in the cloud. There are many issues in Cloud Computing Security. This paper discussed about various issues in the Cloud Computing environment and the future work directions have identified for the Cloud Computing Security. Keywords: Cloud Computing, Cloud Service Providers, Security, Hybrid and Portability. 1.Introduction Cloud computing provide a shared pool of resources over the internet. It is the fastest growing part of network-based computing. Cloud computing provides many benefits to customers of all sizes: simple users, developers, enterprises and all types of organizations. Cloud computing has improved the efficiency of operation for the individual and also for the business people. Based on the user and business needs there are four types of clouds available, Public, Private, Hybrid, and Community. There are three types of cloud service model they are IaaS (Infrastructure as a Service), PaaS (Platform as a Service) and SaaS (Software as a Service). There are a lots of security concerns are in the implementation of the data accessing at cloud computing. Some of them are as follows: Data Transmission, Access to Servers and Applications - The Application server is the responsible ones for all the applications developed by individual servers in cloud. They also grant server accessing authority to the individual applications. Network Security, Virtualized Security – The virtualized security issues are related to the virtualized software based designed network in the field of information technology. These applications found their static and run time issues through the working of firewalls and routers. Data Privacy and Data Security, Data Location, Data Integrity, Data Segregation, Data Availability, Security Policy and Compliance – This system will effectively specify set of rules and formulations for the personnel specification and data accessing over the network [1]. These are considered as some of the basic security issues that are mainly concerned over the concept of cloud computing. 2.Literature Review Yunchan et.,al., 2020, [7] “The aim of the work is to identify about different issues and corresponding solutions for the cloud based architecture. The review on different techniques on security is reported as the results of the paper. The effective analysis was done for the enhancement of trustworthy environment on the