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Risk Assessment Quantification in Hybrid Cloud Configuration

Authors:
Shigeaki Tanimoto
Tsutomu Konosu
Motoi Iwashita
Hiroyuki Sato
Atsushi Kanai

Keywords: Risk Assessment; Hybrid Cloud Configuration; Risk Matrix; Risk Value Formula; Information Security Management System (ISMS)

Abstract:
With recent progress in Internet services and high-speed network environments, cloud computing has rapidly developed. Furthermore, the hybrid cloud configuration is now attracting attention, because it offers the advantages of both public and private clouds. However, public clouds have the problem of uncertain security, while private clouds have the problem of high cost. Thus, risk assessment in a hybrid cloud configuration is an important issue. Our previous study analyzed qualitatively risk assessment of the hybrid cloud configuration. Accordingly, through analysis of risk in a hybrid cloud configuration, 21 risk factors were extracted and evaluated, and countermeasures were proposed. However, we recognized that it was only a qualitative study and that a quantitative evaluation would be needed to make its countermeasures more practical. Hence, in this paper, the risk factors identified in the previous study are analyzed and quantitatively evaluated. Specifically, the values of the risk factors were approximately calculated by using a risk formula used in the field of information security management systems (ISMS). On the basis of these values, the effect of the countermeasures proposed in the previous study was evaluated quantitatively. It was found that the countermeasures in the previous study could reduce their corresponding risk factors by about 18% - 36%. The results herein can be used to promote hybrid cloud computing services in the future.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2015

Publication date: August 23, 2015

Published in: conference

ISSN: 2162-2116

ISBN: 978-1-61208-427-5

Location: Venice, Italy

Dates: from August 23, 2015 to August 28, 2015