Content Provider	IEEE Xplore Digital Library
Author	Clark, John A. Tapiador, Juan E. McDermid, John Cheng, Pau-Chen Agrawal, Dakshi Ivanic, Natalie Slogget, Dave
Copyright Year	2010
Description	Author affiliation: US Army Research Laboratory, Adelphi, Maryland, U.S.A. (Ivanic, Natalie) \|\| LogicaCMG, London, U.K. (Slogget, Dave) \|\| IBM Thomas J. Watson Research Center, New York, U.S.A. (Cheng, Pau-Chen; Agrawal, Dakshi) \|\| Department of Computer Science, University of York, York, U.K. (Clark, John A.; Tapiador, Juan E.; McDermid, John)
Abstract	In traditional multi-level security (MLS) models, object labels are fixed assessments of sensitivity. In practice there will inevitably be some uncertainty about the damage that might be caused if a document falls into the wrong hands. Furthermore, unless specific management action is taken to regrade the label on an object, it does not change. This does not reflect the operational reality of many modern systems where there is clearly a temporal element to the actual sensitivity of information. Tactical information may be highly sensitive right now but comparatively irrelevant tomorrow whilst strategic secrets may need to be maintained for many years, decades, or even longer. In this paper we propose to model both security labels and clearances as probability distributions. We provide practical templates to model both uncertainty and temporally characterized dependencies, and show how these features can be naturally integrated into a recently proposed access control framework based on quantified risk.
Starting Page	1
Ending Page	9
File Size	242861
Page Count	9
File Format	PDF
ISBN	9789898425188
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-26
Publisher Place	Greece
Access Restriction	Subscribed
Rights Holder	INSTICC
Subject Keyword	Access control Multi-level security Sensitivity Uncertainty Shape Risk-based access control Decision making Information sharing Trajectory
Content Type	Text
Resource Type	Article

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