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Attributes and Dimensions of Trust in Secure Systems

Bradbury, Matthew, Prince, Daniel, Marcinkiewicz, Victoria and Watson, Tim 2023. Attributes and Dimensions of Trust in Secure Systems. Presented at: IoT '22: Proceedings of the 12th International Conference on the Internet of Things, Delft Netherlands, 7-10 November 2022. IoT '22: Proceedings of the 12th International Conference on the Internet of Things. ACM, pp. 179-186. 10.1145/3567445.3571105

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What is it to be trusted? This is an important question as trust is increasingly placed in a system and the degree to which a system is trusted is increasingly being assessed. However, there are issues with how related terms are used. Many definitions focus on one attribute of trust (typically behaviour) preventing that definition from being used for other attributes (e.g., identity). This is confused further by conflating what trustors measure about a trustee and what conclusions a trustor reaches about a trustee. Therefore, in this paper we present definitions of measures (trustiness and trustworthiness) and conclusions (trusted and trustworthy). These definitions are general and do not refer to a specific attribute allowing them to be used with arbitrary attributes which are being assessed (e.g., identity, behaviour, limitation, execution, correctness, data, environment). In addition, in order to demonstrate the complexities of describing if a trustee is designated as trusted or trustworthy, a set of dimensions are defined to describe attributes (time, scale, proactive/reactive, strength, scope, source). Finally, an example system is classified using these attributes and their dimensions in order to highlight the complexities of describing a system as holistically trusted or trustworthy.

Item Type: Conference or Workshop Item (Paper)
Date Type: Published Online
Status: Published
Schools: Psychology
Publisher: ACM
ISBN: 978-1-4503-9665-3
Date of First Compliant Deposit: 23 January 2023
Date of Acceptance: 10 November 2022
Last Modified: 23 Jan 2023 15:00

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