Cloud computing: Overview and risk identification based on classification by type

The Cloud Computing is experiencing a powerful and very fast development in the IT field. Based on the principle of virtualization, it allows the consumer to use computing resources on demand, by means of the Internet, regardless of location and time. This technology also ensures broadband network access with fast resizing as required by the user. Finally, the invoicing is determined according to the usage. However, the pooling of resources increases the number of risks affecting the properties of; Confidentiality, availability and integrity. These risks are related to several factors; Data location, loss of governance and others. Unlike other works in which the risk analysis in Cloud Computing is done passively. This work aims to make a thorough study to identify the set of security risks in a cloud environment in a structured way, by classifying them by types of service as well as by deployment and hosting models. This classification is fundamental since, except for the common risks, there are others which depend on the type of used cloud and which must be determined.