Cloud computing and security measure

Cloud computing is the most popular and smart technology, among all other computing paradigm such as parallel computing, distributed computing, and grid computing. It is defined as on-demand network access to a shared pool of configurable resources (e.g. network). The main idea of cloud is to provide on-demand computing services with high reliability, scalability and availability in a distributed environment. Outsourcing and extension of business through cloud has provided customer an ease of the local data storage and maintenance. However, the customer no longer has physical possession of the possibly large size of outsourced data. This draws a security concern on the data integrity protection in cloud computing especially for customers with constrained computing resources and capabilities. Security is one of the major factor that hampers the growth of cloud computing. An estimation of security risks in cloud computing systems is an essential part of the process of security measures. For a proper estimation of security risk requires a good knowledge about the probability distributions of different upcoming events. This paper focuses on security measures and simulation of security risk in cloud computing. Probability distribution model is used for simulation of possible security risk in cloud services.