![]() ![]() Sixty four percent of users in our study encountered at least one stop-point while using the Tor Browser Bundle. Stop points are places in an interface at which an individual is at risk from being presented with a situation which may prevent them from moving forward with installation or use. ![]() Since systems such as Tor give 1 n anonymity, the existence of stop-points is of particular concern because wider adoption of Tor equals better anonymity for all users of the system. We look at these tools through users' eyes, and provide recommendations to improve their usability and increase user-acceptance.īroad-based participation in anonymizing technology can be hindered by a lack of usability. Through a better understanding of users' perception and attitude towards privacy risks, we aim to inform the design of privacy-preserving mobile applications. Our usability studies show that mobile privacy-preserving tools fail to fulfill fundamental usability goals such as learnability and intuitiveness-potential reasons for their low adoption rates. For example, only 6% of participants use privacy-preserving applications on their mobile devices, but 83% are concerned about privacy. And, although participants believe they are primarily responsible for protecting their own privacy, there is a clear gap between their perceived privacy risks and the defenses they employ. We found that users have incomplete mental models of privacy risks associated with such devices. Our survey explores users' knowledge of privacy risks, as well as their attitudes and motivations to protect their privacy on mobile devices. We explore mobile privacy through a survey and through usability evaluation of three privacy-preserving mobile applications. ![]()
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