'SSL?! What on earth is that?': Towards Designing Age-Inclusive Secure Smartphone Browsing
arxiv(2024)
摘要
Owing to the increase in 'certified' phishing websites, there is a steady
increase in the number of phishing cases and general susceptibility to
phishing. Trust mechanisms (e.g., HTTPS Lock Indicators, SSL Certificates) that
help differentiate genuine and phishing websites should therefore be evaluated
for their effectiveness in preventing vulnerable users from accessing phishing
websites. In this article, we present a study involving 18 adults (male-6;
female-12) and 12 older adults (male-4; female-8) to understand the usability
of current trust mechanisms and preferred modalities in a conceptualized
mechanism. In the first part of the study, using Chrome browser on Android, we
asked the participants to browse a banking website and a government website for
digital particulars. We asked them to identify which one of the two was a
phishing website, rate the usability of both websites and provide qualitative
feedback on the trust mechanisms. In the second part, we conceptualized an
alternative trust mechanism, which allows seeking social, community and
AI-based support to make website trust-related decisions. Herein, we asked the
participants as to which modality (social, community or AI) they prefer to seek
support from and why it is preferred. Using the current trust mechanisms, none
of the participants were able to identify the phishing website. As the
participants rated the current mechanisms poorly in terms of usability, they
expressed various difficulties that largely did not differ between adults and
older adults. In the conceptualized mechanism, we observed a notable difference
in the preferred modalities, in that, older adults primarily preferred social
support. In addition to these overall findings, specific observations suggest
that future trust mechanisms should not only consider age-specific needs but
also incorporate substantial improvement in terms of usability.
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