As devices with always-on microphones located in people’s homes, smart speakers have significant privacy implications. We surveyed smart speaker owners about their beliefs, attitudes, and concerns about the recordings that are made and shared by their devices. To ground participants’ responses in concrete interactions, rather than collecting their opinions abstractly, we framed our survey around randomly selected recordings of saved interactions with their devices. We surveyed 116 owners of Amazon and Google smart speakers and found that almost half did not know that their recordings were being permanently stored and that they could review them; only a quarter reported reviewing interactions, and very few had ever deleted any. While participants did not consider their own recordings especially sensitive, they were more protective of others’ recordings (such as children and guests) and were strongly opposed to use of their data by third parties or for advertising. They also considered permanent retention, the status quo, unsatisfactory. Based on our findings, we make recommendations for more agreeable data retention policies and future privacy controls.
Web browser warnings should help protect people from malware, phishing, and network attacks. Adhering to warnings keeps people safer online. Recent improvements in warning design have raised adherence rates, but they could still be higher. And prior work suggests many people still do not understand them. Thus, two challenges remain: increasing both comprehension and adherence rates. To dig deeper into user decision making and comprehension of warnings, we performed an experience sampling study of web browser security warnings, which involved surveying over 6,000 Chrome and Firefox users in situ to gather reasons for adhering or not to real warnings. We find these reasons are many and vary with context. Contrary to older prior work, we do not find a single dominant failure in modern warning design-like habituation-that prevents effective decisions. We conclude that further improvements to warnings will require solving a range of smaller contextual misunderstandings.
Smart TVs have rapidly become the most common smart appliance in typical households. In the U.S., most television sets on the market have advanced sensors not traditionally found on conventional TVs, such as a microphone for voice commands or a camera for photo or video input. These new sensors enable features that are convenient, but they may also introduce new privacy implications. We surveyed 591 U.S. Internet users about their current understanding and expectations about how smart TVs collect and use data. We found a wide range of assumptions and opinions among our respondents, and a good deal of uncertainty about what's collected and how it is used. In addition, these assumptions and opinions varied between data types and sensors. One area where we found broad agreement was that it is unacceptable for the data to be repurposed or shared. But there was little understanding of the protections-or lack thereof-afforded by current laws and regulations to constrain such sharing. We hope that our findings will enhance end-user privacy by providing useful insights for smart TV manufacturers, regulators and lawmakers, and designers of privacy-enhancing technologies.
Many consumers now rely on different forms of voice assistants, both stand-alone devices and those built into smartphones. Currently, these systems react to specific wake-words, such as "Alexa," "Siri," or "Ok Google." However, with advancements in natural language processing, the next generation of voice assistants could instead always listen to the acoustic environment and proactively provide services and recommendations based on conversations without being explicitly invoked. We refer to such devices as "always listening voice assistants" and explore expectations around their potential use. In this paper, we report on a 178-participant survey investigating the potential services people anticipate from such a device and how they feel about sharing their data for these purposes. Our findings reveal that participants can anticipate a wide range of services pertaining to a conversation; however, most of the services are very similar to those that existing voice assistants currently provide with explicit commands. Participants are more likely to consent to share a conversation when they do not find it sensitive, they are comfortable with the service and find it beneficial, and when they already own a stand-alone voice assistant. Based on our findings we discuss the privacy challenges in designing an always-listening voice assistant.
We present the results of an online survey of smartphone unlocking (N = 8, 286) that we conducted in eight different countries. The goal was to investigate differences in attitudes towards smartphone unlocking between different national cultures. Our results show that there are indeed significant differences across a range of categories. For instance, participants in Japan considered the data on their smartphones to be much more sensitive than those in other countries, and respondents in Germany were 4.5 times more likely than others to say that protecting data on their smartphones was important. The results of this study shed light on how motivations to use various security mechanisms are likely to differ from country to country.
Decades of psychology and decision-making research show that everyone makes decisions differently; yet security messaging is still one-size-fits-all. This suggests that we can improve outcomes by delivering information relevant to how each individual makes decisions. We tested this hypothesis by designing messaging customized for stable personality traitsspecifically, the five dimensions of the General Decision-Making Style (GDMS) instrument. We applied this messaging to browser warnings, security messaging encountered by millions of web users on a regular basis. To test the efficacy of our nudges, we conducted experiments with 1,276 participants, who encountered a warning about broken HTTPS due to an invalid certificate under realistic circumstances. While the effects of some nudges correlated with certain traits in a statistically significant manner, we could not reject the null hypothesis-that the intervention did not affect the subjects' behavior-for most of our nudges, especially after accounting for participants who did not pay close attention to the message. In this paper, we present the detailed results of our experiments, discuss potential reasons for why the outcome contradicts the decision-making research, and identify lessons for researchers based on our experience. Permission to freely reproduce all or part of this paper for noncommercial purposes is granted provided that copies bear this notice and the full citation on the first page. Reproduction for commercial purposes is strictly prohibited without the prior written consent of the Internet Society, the first-named author (for reproduction of an entire paper only), and the author's employer if the paper was prepared within the scope of employment.
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