Nudging Users to Change Breached Passwords Using the Protection Motivation Theory

• URL: http://arxiv.org/abs/2405.15308v1
• Date: Fri, 24 May 2024 07:51:15 GMT
• Title: Nudging Users to Change Breached Passwords Using the Protection Motivation Theory
• Authors: Yixin Zou, Khue Le, Peter Mayer, Alessandro Acquisti, Adam J. Aviv, Florian Schaub,
• Abstract summary: We draw on the Protection Motivation Theory (PMT) to design nudges that encourage users to change breached passwords. Our study contributes to PMT's application in security research and provides concrete design implications for improving compromised credential notifications.
• Score: 58.87688846800743
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We draw on the Protection Motivation Theory (PMT) to design nudges that encourage users to change breached passwords. Our online experiment ($n$=$1,386$) compared the effectiveness of a threat appeal (highlighting negative consequences of breached passwords) and a coping appeal (providing instructions on how to change the breached password) in a 2x2 factorial design. Compared to the control condition, participants receiving the threat appeal were more likely to intend to change their passwords, and participants receiving both appeals were more likely to end up changing their passwords; both comparisons have a small effect size. Participants' password change behaviors are further associated with other factors such as their security attitudes (SA-6) and time passed since the breach, suggesting that PMT-based nudges are useful but insufficient to fully motivate users to change their passwords. Our study contributes to PMT's application in security research and provides concrete design implications for improving compromised credential notifications.

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