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"I Personally Relate It to the Traffic Light": A User Study on Security & Privacy Indicators in a Secure Email System Committed to Privacy by Default
Stojkovski, Borce; Lenzini, Gabriele; Koenig, Vincent
2021In Proceedings of the 36th Annual ACM Symposium on Applied Computing
Peer reviewed
 

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Keywords :
secure email; privacy engineering; privacy indicators; user studies; usable security
Abstract :
[en] Improving the usability and adoption of secure (i.e. end-to-end encrypted) email systems has been a notorious challenge for over two decades. One of the open questions concerns the amount and format of information that should be communicated to users to inform them of the security and privacy properties with respect to different messages or correspondents. Contributing to the ongoing discussion on the usability and effectiveness of security and privacy indicators, particularly in the context of systems targeting non-expert users, this paper sheds light on users' evaluation of traffic light-inspired indicators, as a metaphor to represent different privacy states and guarantees, provided by a new system for email end-to-end encryption called p≡p. Using a mixed-methods approach, based on input gathered from 150 participants in three online studies, we highlight the pros and cons of the traffic light semantic in p≡p's context and beyond, and discuss the potential implications on the perceived security and use of such systems.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Stojkovski, Borce ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > IRiSC
Lenzini, Gabriele ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > IRiSC
Koenig, Vincent ;  University of Luxembourg > Faculty of Humanities, Education and Social Sciences (FHSE) > Department of Behavioural and Cognitive Sciences (DBCS)
External co-authors :
no
Language :
English
Title :
"I Personally Relate It to the Traffic Light": A User Study on Security & Privacy Indicators in a Secure Email System Committed to Privacy by Default
Publication date :
2021
Event name :
36th Annual ACM Symposium on Applied Computing
Event date :
from 22-03-2021 to 26-03-2021
Main work title :
Proceedings of the 36th Annual ACM Symposium on Applied Computing
Publisher :
Association for Computing Machinery, New York, NY, USA, Unknown/unspecified
ISBN/EAN :
9781450381048
Collection name :
SAC '21
Pages :
1235–1246
Peer reviewed :
Peer reviewed
Focus Area :
Security, Reliability and Trust
FnR Project :
FNR10621687 - Security And Privacy For System Protection, 2015 (01/01/2017-30/06/2023) - Sjouke Mauw
Available on ORBilu :
since 27 April 2021

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