A Survey on Information Security in Cloud Computing

Cloud computing is a type of Internet-based computing that provides different services, is a way to increase capacity or add capabilities dynamically without investing in new infrastructure, training new staff or licensing new software. Cloud computing has gained popularity by providing easy and cost-effective access to IT (Information Technology). However, although it expands existing IT capabilities and although it has gone from being a promising business concept, to one of the fast growing segments; as more and more information about individuals and companies is placed in the cloud, concerns begin to grow about how secure the environment is. Security is one of the main problems that reduces the growth of cloud computing and the complications with privacy and data protection continue to affect the market. Users of cloud services should be vigilant to understand the risks of data breaches in this new environment. This article presents a survey of the different security risks that represent a threat to the cloud due to the nature of the service delivery models of a cloud computing system. On the other hand, works carried out with respect to security are also explored, such as Vigenère, Playfair, Hill and Vernan encryption, proxy re-encryption and Railfence cipher. With this work we hope to provide useful information about cloud computing security.