|| Bioinfo Publications || 118 International Journal of Computational Intelligence Techniques ISSN: 0976-0466 & E-ISSN: 0976-0474, Volume 4, Issue 1, 2013, pp.-118-121. Available online at http://www.bioinfopublication.org/jouarchive.php?opt=&jouid=BPJ0000221 AL-DUBAI Y.F.*, AL-DUBAI A.F. AND KHAMITKAR S.D School of Computational Sciences, Swami Ramanand Teerth Marathwada University, Nanded- 431606, MS, India. *Corresponding Author: Email- yaseraldubai@gmail.com Received: June 14, 2013; Accepted: June 28, 2013 Introduction "Cloud computing" simply means "Internet computing", and general- ly looked to the Internet and a collection of clouds, and thus can define the word cloud computing and take advantage of the Internet to provide Information Technology services as possible to the peo- ple and organizations. Cloud computing allows consumers to ac- cess resources on the Internet through the Internet, from anywhere at any time without having to worry about the technical manage- ment / material and resource conservation issues the original. Be- sides, cloud computing resources are dynamic and scalable [1][2]. Cloud computing is an independent computing it is entirely different from the network and computing services. Google Apps is the ulti- mate form of cloud computing, it can access to services via the browser and publish it on millions of devices over the Internet. Re- sources can be accessed from the cloud at any time and from any place all over the world using the internet. Cloud computing is less expensive than other computing models; and zero maintenance costs involved since the service provider is responsible for providing services and customers free of maintenance and management problems of hardware resources. Due to this property and also known as cloud computing service or that demand. "Scalability is a key attribute in the field of cloud computing and is achieved through virtualization for servers. Thus, the generation of a web of new com- puting uses remote servers are placed in data centers very secure and safe for the storage and management of data, so organizations do not need to pay for and take care of the internal solutions of information technology. After you create a cloud, cloud computing and publishing reference to the different requirements and for the purpose it will be used. The main service models that are being deployed as shown in [Fig-1]  Software as a Service (SaaS): Software‘s are provided as a service to the consumers according to their requirement, ena- bles consumers to use the services that are hosted on the cloud server.  Platform as a Service (PaaS): Clients are provided platforms access, which enables them to put their own customized soft- ware‘s and other applications on the clouds.  Infrastructure as a Service (IaaS): Rent processing, storage, network capacity, and other basic computing resources are granted, enables consumers to manage the operating systems, applications, storage, and network connectivity. There are four types of cloud computing models mentioned by NIST (2011): private cloud, public cloud, hybrid cloud and cloud commu- nity.  Public Cloud: it is for the general public, where resources are provided, and web applications, and Internet services via the Internet, and any user can access services provided by the cloud,. Help public organizations in the provision of infrastruc- ture for the implementation of the public cloud. Citation: Al-Dubai Y.F., Al-Dubai A.F. and Khamitkar S.D. (2013) Security Risk Associated with Cloud Computing: Key Issues and A Survey. International Journal of Computational Intelligence Techniques, ISSN: 0976-0466 & E-ISSN: 0976-0474, Volume 4, Issue 1, pp.-118-121. Copyright: Copyright©2013 Al-Dubai Y.F., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited. International Journal of Computational Intelligence Techniques ISSN: 0976-0466 & E-ISSN: 0976-0474, Volume 4, Issue 1, 2013 Abstract- These days not only large organizations, but companies even small and medium-size computing look forward to the adoption of economic resources for their application, either through the introduction of a new concept of cloud computing in their environment. Cloud com- puting improves the performance of organizations by using minimal resources and administrative support, with a common network, valuable resources, bandwidth, and software and hardware in an effective manner in terms of cost and service limited dealings provider. Basically it's a new concept to provide a virtual resource for consumers. Consumers can request a cloud services and applications, solutions and can store a large amount of data from a different location. But due to the constantly increasing in popularity of cloud computing there is a growing risk that security is a major issue and higher. This paper discusses some of the main security risk in cloud computing, and present the reference archi- tectures of cloud security solutions that can be implemented to treat those attacks. Keywords- Cloud computing, Risks, Security, Attacks SECURITY RISK ASSOCIATED WITH CLOUD COMPUTING: KEY ISSUES AND A SURVEY