Evaluating Privacy Adaptation Presentation Methods to support Social Media Users in their Privacy-Related Decision-Making Process

Several privacy scholars have advocated for user-tailored privacy (UTP). A privacy-enhancing adaptive privacy approach to help reconcile users\u27 lack of awareness, privacy management skills and motivation to use available platform privacy features with their need for personalized privacy support in alignment with their privacy preferences. The idea behind UTP is to measure users\u27 privacy characteristics and behaviors, use these measurements to create a personalized model of the user\u27s privacy preferences, and then provide adaptive support to the user in navigating and engaging with the available privacy settings---or even implement certain settings automatically on the user\u27s behalf. To this end, most existing work on UTP has focused on the measurement\u27\u27 and algorithmic modeling\u27\u27 aspect of UTP, however, with less emphasis on the adaptation\u27\u27 aspect. More specifically, limited research efforts have been devoted to the exploration of the presentation of privacy adaptations that align with user privacy preferences. The concept of presentation\u27\u27 goes beyond the visual characteristics of the adaptation: it can profoundly impact the required level of engagement with the system and the user\u27s tendency to follow the suggested privacy adaptation. This dissertation evaluates the potential of three adaptation presentation methods in supporting social media users to make better\u27\u27 privacy protection decisions. These three adaptation presentation methods include 1) automation that involves the automatic application of the privacy settings by the system without user input to alleviate them from having to make frequent privacy decisions; 2) highlights that emphasize certain privacy features to guide users to apply the settings themselves in a subtle but useful manner; and 3) suggestions that can explicitly inform users about the availability of certain settings that can be applied directly by the user. The first study focuses on understanding user perspectives on the different configurations of autonomy and control of the examined three privacy adaptation presentation methods. A second follow-up study examines the effectiveness of these adaptation presentation methods in improving user awareness and engagement with available privacy features. Taking into account social media users\u27 privacy decision-making process (i.e., they often make privacy-related decisions), the final study assesses the impact of privacy-related affect and message framing (i.e., tone style) on users\u27 privacy decisions in adaptation-supported social media environments. We offer insights and provide practical considerations towards the selection and use of optimal\u27\u27 privacy adaptation methods to provide user-tailored privacy decision support

Systematic Review on Privacy Categorization

In the modern digital world users need to make privacy and security choices that have far-reaching consequences. Researchers are increasingly studying people's decisions when facing with privacy and security trade-offs, the pressing and time consuming disincentives that influence those decisions, and methods to mitigate them. This work aims to present a systematic review of the literature on privacy categorization, which has been defined in terms of profile, profiling, segmentation, clustering and personae. Privacy categorization involves the possibility to classify users according to specific prerequisites, such as their ability to manage privacy issues, or in terms of which type of and how many personal information they decide or do not decide to disclose. Privacy categorization has been defined and used for different purposes. The systematic review focuses on three main research questions that investigate the study contexts, i.e. the motivations and research questions, that propose privacy categorisations; the methodologies and results of privacy categorisations; the evolution of privacy categorisations over time. Ultimately it tries to provide an answer whether privacy categorization as a research attempt is still meaningful and may have a future

Factors influencing the use of privacy settings in location-based social networks

The growth of location-based social networks (LBSN) such as Facebook and Twitter has been rapid in recent years. In LBSNs, users provide location information on public profiles that potentially can be used in harmful ways. LBSNs have privacy settings that allow users to control the privacy level of their profiles, thus limiting access to location information by other users; but for various reasons users seldom make use of them. Using the protection motivation theory (PMT) as a theoretical lens, this dissertation examines whether users can be encouraged to use LBSN privacy settings through fear appeals. Fear appeals have been used in various studies to arouse fear in users, in order to motivate them to comply to an adaptive behaviour through the threat of impending danger. However, within the context of social networking, it is not yet clear how fear-inducing arguments will ultimately influence the use of privacy settings by users. The purpose of this study is to investigate the influence of fear appeals on user compliance, with recommendations to enact the use of privacy settings toward the alleviation of privacy threats. Using a survey methodology, 248 social-network users completed an instrument measuring the variables conceptualized by PMT. Partial Least Squares Structural Equation Modelling (PLS-SEM) was used to test the validity and reliability, and to analyze the data. Analysis of the responses show that PMT provides an explanation for the intention to use privacy settings by social-network users. Risk susceptibility, response efficacy, self-efficacy and response cost were found to have a positive impact on the intention to use privacy settings, while sharing benefits and maladaptive behaviours were found to have a negative impact on the intention to use privacy settings. However, risk severity and fear were not found to be significant predictors of the intention to use privacy settings. This study contributes to existing research on PMT in a sense that fear appeal should focus more on coping appraisal, rather than on threat appraisal which is consistent with the results of most studies on protection motivation

Digital Self-Ownership: A Publicity-Rights Framework for Determining Employee Social Media Rights

Imagine an upandcoming company hires you as one of its first employees. Passionate about your employer, you put in long hours doing everything from marketing to accounting to event planning. You are also proud of your employer\u27s product, so you begin to publicize it to your friends through your social network accounts. (In fact, the company\u27s founder is also one of your Facebook friends.) You tell your friends about the product launch, invite them to marketing events, and eventually blog about your industry, amassing a significant social media following while creating buzz about your employer. But one day, during layoffs unrelated to your own efforts, you are fired. As you walk out the door, your supervisor asks you to return the office keys, your parking pass, and...administrative rights to your social media profiles. Can this be