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Evaluating the End-User Experience of Private Browsing Mode

Abu-Salma, R; Livshits, B; (2020) Evaluating the End-User Experience of Private Browsing Mode. In: Proceedings of the 2020 CHI Conference on Human Factors in Computing Systems (CHI '20). ACM: New York, NY, USA. Green open access

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Abstract

In this paper, we investigate why users of private browsing mode misunderstand the benefits and limitations of private browsing. We design and conduct a three-part study: (1) an analytic evaluation of the user interface of private mode in different browsers; (2) a qualitative user study to explore user mental models of private browsing; (3) a participatory design study to investigate why existing browser disclosures, the in-browser explanations of private mode, do not communicate the actual protection of private mode. We find the user interface of private mode in different browsers violated well-established design guidelines and heuristics. Further, most participants had incorrect mental models of private browsing, influencing their understanding and usage of private mode. We also find existing browser disclosures did not explain the primary security goal of private mode. Drawing from the results of our study, we extract a set of recommendations to improve the design of disclosures.

Type: Proceedings paper
Title: Evaluating the End-User Experience of Private Browsing Mode
Event: CHI '20: CHI Conference on Human Factors in Computing Systems
Location: Honolulu, HI, USA
Dates: 25 April 2020 - 30 April 2020
Open access status: An open access version is available from UCL Discovery
DOI: 10.1145/3313831.3376440
Publisher version: https://doi.org/10.1145/3313831.3376440
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Human-Computer Interaction; Usable Security and Privacy
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
URI: https://discovery.ucl.ac.uk/id/eprint/10098459
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