Data Security Issues and Challenges in Cloud Computing

Cloud Computing refers to applications&services that run on a distributed network using virtualized resources&accessed by common internet protocols and networking standards. Services are offered to the users over the web on pay-per-use on demand. Cloud services are provided by a third party supplier who possesses the arrangement. Cloud Computing has many advantages such as flexibility, efficiency, scalability, integration and capital reduction. In spite of possible benefits security is one big challenge that is hindering the growth of cloud computing. Various security challenges and issues are there for all the Service Delivery Models. Infrastructure as a service (IaaS) is a foundation layer to all the other Service Delivery models. Lack of security in this layer will certainly affect the other Service Delivery Models i,e PaaS&SaaS, which are built upon IaaS Layer. In this paper we present an elaborated study of Data Security which is a part of IaaS components security and determine vulnerabilities & countermeasures.