2 research outputs found
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Cloud Broker Based Trust Assessment of Cloud Service Providers
Cloud computing is emerging as the future Internet technology due to its advantages such as sharing of IT resources, unlimited scalability and flexibility and high level of automation. Along the lines of rapid growth, the cloud computing technology also brings in concerns of security, trust and privacy of the applications and data that is hosted in the cloud environment. With large number of cloud service providers available, determining the providers that can be trusted for efficient operation of the service deployed in the provider’s environment is a key requirement for service consumers.
In this thesis, we provide an approach to assess the trustworthiness of the cloud service providers. We propose a trust model that considers real-time cloud transactions to model the trustworthiness of the cloud service providers. The trust model uses the unique uncertainty model used in the representation of opinion. The Trustworthiness of a cloud service provider is modelled using opinion obtained from three different computations, namely (i) compliance of SLA (Service Level Agreement) parameters (ii) service provider satisfaction ratings and (iii) service provider behaviour. In addition to this the trust model is extended to encompass the essential Cloud characteristics, credibility for weighing the feedbacks and filtering mechanisms to filter the dubious feedback providers. The credibility function and the early filtering mechanisms in the extended trust model are shown to assist in the reduction of impact of malicious feedback providers
Integrating Security Services in Cloud Service Stores
Protecting systems, applications and data hosted on a Cloud environment against cyber-threats, and accounting for security incidents across the Cloud estate are prerequisites to Cloud adoption by business, and a fundamental element of both national and corporate cyber-security and Cloud strategies. Yet, Cloud IaaS and PaaS providers typically hold Cloud consumers accountable for protecting their applications, while Cloud users often find that protecting their proprietary system, application and data stacks on public or hybrid Cloud environments can be complex, expensive and time-consuming. In this paper we describe a novel Cloud-based security management solution that empowers Cloud consumers to protect their systems, applications and data in the Cloud, whilst also improving the control and visibility of their Cloud security operations.
This is achieved by enhancing the security policy management of commercial technologies, and via their integration with multiple Cloud-based hosts and applications. The result of this integration is then offered as a re-usable service across multiple Cloud platforms through a Cloud service store