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Conference Paper  November 1, 2013

Accountable Clouds

SRI Authors Natarajan Shankar, Gabriela Ciocarlie

Citation

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Gehani, A., Ciocarlie, G. F., & Shankar, N. (2013, 12-14 November). Accountable clouds. Paper presented at the IEEE International Conference on Technologies for Homeland Security (HST’13), Waltham, MA.

Abstract

An increasing number of organizations are migrating their critical information technology services, from healthcare to business intelligence, into public cloud computing environments. However, even if cloud technologies are continuously evolving, they still have not reached a maturity level that allows them to provide users with high assurance about the security of their data beyond existent service level agreements (SLAs). To address this limitation, we propose a suite of mechanisms that enhances cloud computing technologies with more assurance capabilities. Assurance becomes a measurable property, quantified by the volume of evidence to audit and retain in a privacy-preserving and nonrepudiable fashion. By proactively collecting potential forensic evidence, the cloud becomes more accountable, while providing its regular services. In the case of a security breach, the cloud provides the appropriate reactive security framework for validating or repudiating claims. Moreover, different levels of assurance relate to different levels of storage and privacy protection requested by users, leading to an assurance-based price model for cloud services.

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