Facebook and Online Privacy: Attitudes,Behaviors, and Unintended Consequences

This article investigates Facebook users' awareness of privacy issues and perceived benefits and risks of utilizing Facebook. Research found that Facebook is deeply integrated in users' daily lives through specific routines and rituals. Users claimed to understand privacy issues, yet reported uploading large amounts of personal information. Risks to privacy invasion were ascribed more to others than to the self. However, users reporting privacy invasion were more likely to change privacy settings than those merely hearing about others' privacy invasions. Results suggest that this lax attitude may be based on a combination of high gratification, usage patterns, and a psychological mechanism similar to third‐person effect. Safer use of social network services would thus require changes in user attitude.     

Open Challenges in Relationship-Based Privacy Mechanisms for Social Network Services

Social networking services (SNSs) such as Facebook and Twitter have experienced explosive growth during the few past years. Millions of users have created their profiles on these services because they experience great benefits in terms of friendship. SNSs can help people to maintain their friendships, organize their social lives, start new friendships, and meet others who share their hobbies and interests. However, all these benefits can be eclipsed by the privacy hazards that affect people in SNSs. People expose intimate information about their lives on SNSs, and this information affects the way others think about them. It is crucial that users be able to control how their information is distributed through the SNSs and decide who can access it. This article presents a list of privacy threats that can affect SNS users and what requirements privacy mechanisms should fulfill to prevent this threats. Then the article reviews current approaches and analyzes to what extent they cover the requirements.     

Control your Facebook: An analysis of online privacy literacy

For an effective and responsible communication on social network sites (SNSs) users must decide between withholding and disclosing personal information. For this so-called privacy regulation, users need to have the respective skills—in other words, they need to have online privacy literacy. In this study, we discuss factors that potentially contribute to and result from online privacy literacy. In an online questionnaire with 630 Facebook users, we found that people who spend more time on Facebook and who have changed their privacy settings more frequently reported to have more online privacy literacy. People with more online privacy literacy, in turn, felt more secure on Facebook and implemented more social privacy settings. A mediation analysis showed that time spend on Facebook and experience with privacy regulation did not per se increase safety and privacy behavior directly, stressing the importance of online privacy literacy as a mediator to a safe and privacy-enhancing online behavior. We conclude that Internet experience leads to more online privacy literacy, which fosters a more cautious privacy behavior on SNSs.     

Teens’ concern for privacy when using social networking sites: An analysis of socialization agents and relationships with privacy-protecting behaviors

U.S. teens are spending substantial time on social networking sites (SNSs). Yet, only a few studies have documented teens’ privacy-protecting behaviors on SNSs. Using data of Facebook teen users and their parents in the U.S. from the Pew Internet’s Teens & Privacy Management Survey (N = 622), this study investigated the socialization agents of teens’ level of online privacy concern, and the relationship between teens’ level of online privacy concern and their privacy-protecting behaviors on SNSs. Based on path analysis results, this study identified parents and SNS use as the two significant socialization agents. In particular, this study revealed the role of parents’ privacy concern and the role of SNS use in motivating teens to increase online privacy concern, which, in turn, drives teens to adopt various privacy-setting strategies on SNSs and to set their Facebook profiles to private. Implications for policymakers and educators were discussed.     

Managing privacy boundaries together: Exploring individual and group privacy management strategies in Facebook

Most research on privacy management within the context of social network sites (SNSs) treats users as individual owners of private information. Privacy, however, is beyond individual control and is also managed on a group level. This study applies the Communication Privacy Management theory (CPM) to explore the individual and group privacy management strategies in Facebook. We present a survey completed by 900 members of a youth organization regarding their online behaviors and membership. We found that women are more likely to employ individual privacy management strategies, while men are more likely to employ group privacy management strategies. For group privacy management, we found common bond and the role an individual is attributed within the youth organization to be the strongest predictors. The results generated from this study are a first but important step to illustrate the differences and similarities between individual and group privacy management. We argue that it is necessary to further study and understand group privacy to better approach users’ privacy needs.     

BFF: A tool for eliciting tie strength and user communities in social networking services

The use of social networking services (SNSs) such as Facebook has explosively grown in the last few years. Users see these SNSs as useful tools to find friends and interact with them. Moreover, SNSs allow their users to share photos, videos, and express their thoughts and feelings. However, users are usually concerned about their privacy when using SNSs. This is because the public image of a subject can be affected by photos or comments posted on a social network. In this way, recent studies demonstrate that users are demanding better mechanisms to protect their privacy. An appropriate approximation to solve this could be a privacy assistant software agent that automatically suggests a privacy policy for any item to be shared on a SNS. The first step for developing such an agent is to be able to elicit meaningful information that can lead to accurate privacy policy predictions. In particular, the information needed is user communities and the strength of users’ relationships, which, as suggested by recent empirical evidence, are the most important factors that drive disclosure in SNSs. Given the number of friends that users can have and the number of communities they may be involved on, it is infeasible that users are able to provide this information without the whole eliciting process becoming confusing and time consuming. In this work, we present a tool called Best Friend Forever (BFF) that automatically classifies the friends of a user in communities and assigns a value to the strength of the relationship ties to each one. We also present an experimental evaluation involving 38 subjects that showed that BFF can significantly alleviate the burden of eliciting communities and relationship strength.     

Facebook or Renren? A comparative study of social networking site use and social capital among Chinese international students in the United States

Social networking sites (SNSs) are important tools for college students to maintain and develop social capital. Yet, few studies on the social implications of using SNSs have focused on international students and their use of different social media platforms for social capital. This study aims to fill this gap by examining the implications of using host country and home country SNSs for social capital among Chinese international students in the United States. A survey of Chinese international students at a large public university (N = 210) reveals that both Facebook and Renren use are positively associated with bridging social capital but not with bonding social capital. Facebook use has a stronger relationship with bridging social capital than does Renren use. Yet, only Renren use has a significant and positive relationship with maintaining home country social capital. These results have practical implications for international students to develop different types of social capital through different social media platforms.     

Not Even Past: Information Aging and Temporal Privacy in Online Social Networks

Online social networks (OSNs) make information accessible for unlimited periods and provide easy access to past information by arranging information in time lines or by providing sophisticated search mechanisms. Despite increased concerns over the privacy threat that is posed by digital memory, there is little knowledge about retrospective privacy: the extent to which the age of the exposed information affects sharing preferences. In this article, we investigate how information aging impacts users’ sharing preferences on Facebook. Our findings are based on a between-subjects experiment (n = 272), in which we measured the impact of time since first publishing an OSN post on its sharing preferences. Our results quantify how willingness to share is lower for older Facebook posts and show that older posts have lower relevancy to the user’s social network and are less representative of the user’s identity. We show that changes in the user’s social circles, the occurrence of significant life changes and a user’s young age are correlated with a further decrease in the willingness to keep sharing past information. We discuss our findings by juxtaposing digital memory theories and privacy theories and suggest a vision for mechanisms that can help users manage longitudinal privacy.     

Who discloses the most on Facebook?

With the development of new media, the issue of privacy and its determinants has become the subject of a large body of literature in recent years. The main objective of this study was to check whether loneliness is a predictor of putting private information on Facebook. The participants were 887 young people. Facebook Privacy Scale and Loneliness Scale were used. We showed that young age and loneliness are predictors of disclosure on Facebook. Moreover, junior high school students more often put private information on their Facebook profiles than senior high school and university students.     

All the news that’s fit to post: A profile of news use on social networking sites

Facebook and other social networking sites (SNSs)¹ are altering the way individuals communicate. These online environments allow users to keep up with friends, network with colleagues, and share their personal views and observations with others. Previous work describes typical social networking site users as young, extroverted, and technologically savvy. Little research exists, however, on the emerging role of news in the social network environment. With over 500 million global Facebook users, both print and television based media outlets are making concerted efforts to become part of this important and increasingly ubiquitous virtual world. The present study uses a sample of students, faculty, and staff from a large university to investigate the factors that are related to news use on Facebook. Findings indicate that while news use is still a minor component of overall social network site activity, certain key variables, such as gender and life satisfaction, have a significant impact on how Facebook is used for news-related purposes. Future implications for news in the social networking world are presented and discussed.     

The stress-buffering effect of self-disclosure on Facebook: An examination of stressful life events,social support,and mental health among college students

Stressful life events are viewed as the leading cause of psychological distress. Self-disclosure, however, could buffer the deleterious impact of stress on mental health. Recent studies show that college students are likely to engage in self-disclosure on social network sites (SNSs), but it is unclear to what extent they benefit from doing that. This study examined the effect of self-disclosure on SNSs on young adults’ mental health. Survey data were collected from a probability sample of 560 university students. The results show that people tend to open up on Facebook when in times of stress and that self-disclosure on Facebook moderates the relationship between stressful life events and mental health. Facebook disclosure was also positively associated with enacted social support on Facebook, which led to increased perceived social support, enhanced life satisfaction, and reduced depression. SNSs, therefore, serve as a promising avenue for delivering health care and intervention.     

The relation between use intensity of private and professional SNS,social comparison,self-esteem,and depressive tendencies in the light of self-regulation

The present study's (N?=?145) aim was to introduce a multidimensional behavioural report for assessing activity on the professional social network site (SNS) XING and to carry out a comparison with private SNS use (i.e. Facebook). Psychometric analyses revealed good internal consistency and construct validity of the new XING Activity Questionnaire. Results suggest that private and professional SNS use is positively correlated to people's ability-related social comparison orientation (SCO) and depressive tendencies on the one hand and negatively correlated to self-esteem on the other hand. In addition, both people's general SCO and opinion-related SCO were solely positively correlated to Facebook use. The findings are in line with the Social Online-Self-Regulation-Theory suggesting that people are using not only private but also professional SNSs for self-regulation.     

Students’ self-presentation on Facebook: An examination of personality and self-construal factors

The present research seeks to extend existing theory on self-disclosure to the online arena in higher educational institutions and contribute to the knowledge base and understanding about the use of a popular social networking site (SNS), Facebook, by college students. We conducted a non-experimental study to investigate how university students (N = 463) use Facebook, and examined the roles that personality and culture play in disclosure of information in online SNS-based environments. Results showed that individuals do disclose differently online vs. in-person, and that both culture and personality matter. Specifically, it was found that collectivistic individuals low on extraversion and interacting in an online environment disclosed the least honest and the most audience-relevant information, as compared to others. Exploratory analyses also indicate that students use sites such as Facebook primarily to maintain existing personal relationships and selectively used privacy settings to control their self-presentation on SNSs. The findings of this study offer insight into understanding college students’ self-disclosure on SNS, add to the literature on personality and self-disclosure, and shape future directions for research and practice on online self-presentation.     

基于Skyline计算的社交网络关系数据隐私保护

随着社交软件的流行，越来越多的人加入社交网络产生了大量有价值的信息，其中也包含了许多敏感隐私信息。不同的用户有不同的隐私需求，因此需要不同级别的隐私保护。社交网络中用户隐私泄露等级受社交网络图结构和用户自身威胁等级等诸多因素的影响。针对社交网络数据的个性化隐私保护问题及用户隐私泄露等级评价问题，提出基于Skyline计算的个性化差分隐私保护策略（PDPS）用以发布社交网络关系数据。首先构建用户的属性向量；接着采用基于Skyline计算的方法评定用户的隐私泄露等级，并根据该等级对用户数据集进行分割；然后应用采样机制来实现个性化差分隐私，并对整合后的数据添加噪声；最后对处理后数据进行安全性和实用性的分析并发布数据。在真实数据集上与传统的个性化差分隐私方法（PDP）对比，验证了PDPS算法的隐私保护质量和数据的可用性都优于PDP算法。     

Rationality-based beliefs affecting individual’s attitude and intention to use privacy controls on Facebook: An empirical investigation

Online social networking sites like Facebook provides a fast and easy way to connect with friends and family. Users need to post and share their personal information in order to get the best possible experiences on Facebook. However, the spreading of private information can also lead to serious and harmful issues. Therefore, privacy becomes an important component in the use of Facebook and it is the user’s responsibility to protect his or her profile. This study draws upon the theory of planned behavior and the rational choice theory to investigate the rationality-based beliefs affecting individual’s attitude and intention to use privacy controls on Facebook. The results show that individual’s attitude toward using privacy controls is influenced by benefit of using privacy controls, cost of using privacy controls, and cost of not using privacy controls. Further, benefits of using privacy controls is shaped by beliefs regarding intrinsic benefit and resource safety; cost of not using privacy controls is shaped by beliefs regarding resource vulnerability, threat severity, privacy risk and privacy intrusion; and cost of using privacy controls is shaped by beliefs about intrinsic cost and work impediment. Theoretical and practical implications of the findings are discussed in the paper.     

移动社交网络中矩阵混淆加密交友隐私保护策略

随着移动设备和在线社交网络的快速发展,通过用户的个人属性配置文件匹配,能够帮助用户在邻近的社交网络中迅速找到和自己共同特征的朋友.然而,交友匹配很有可能泄漏用户的敏感信息,因此用户隐私得不到保障.提出一种移动社交网络中交友匹配过程中的隐私保护协议,用户利用混淆矩阵变换算法和内积计算实现交友过程中的隐私安全和高效的匹配;用户可以细粒度定义自己特征属性的特征权重,从而使匹配结果更精确.此外,利用机会分析模型模拟真实交友场景来保证交友的有效性.安全性分析表明,提出的方法更具有隐私性、可用性和更低的通信和计算开销.通过结合真实的社会网络数据进行测试和评估,对比结果显示,比现有解决方案更有效.     

Students’ and teachers’ use of Facebook

The purpose of this article is to review current published research studies focusing on the use of Facebook by students and teachers. The aim of the review is not to solely discuss Facebook in relation to teaching or learning purposes, or about its educational value per se, but also to present a detailed account of the participants’ Facebook usage profile or the extent to which users are engaged in Facebook activities. The emphasis of this review will be upon empirical findings rather than opinion- or theoretical explanations. Following the review guidelines set by Creswell (Research Design Qualitative and Quantitative Approaches, 1994), I summarize the hitherto accumulated state of knowledge concerning Facebook and highlight questions or issues that research has left unresolved. This review is organized into three sections that cover the major topics of current research: (a) students’ Facebook usage profile or extent of Facebook use (e.g., time students spend on Facebook each day, students’ motives for using Facebook, as well as various factors that may affect these usage profiles), (b) the effects of Facebook use (e.g., effects of Facebook self-disclosure on teacher credibility, effects of Facebook use on student social presence and discussion, and effects of Facebook on students’ academic performance), and (c) students’ attitudes toward Facebook. The conclusions overall suggest that Facebook thus far has very little educational use, that students use Facebook mainly to keep in touch with known individuals, and that students tend to disclose more personal information about themselves on Facebook; hence attracting potential privacy risks upon themselves.     

Social network site use,mobile personal talk and social capital among teenagers

Social network sites (SNSs) and mobile phones are becoming increasingly important in teenagers’ lives. Using data collected from a nationally representative survey (N = 800), this study explores the variation of social capital by SNS adoption, different SNS activities, and mobile personal talk among teenagers. The results indicate that SNS adoption and mobile personal talk can not only enhance teenagers’ close ties with friends, but also jointly promote teenagers’ civic engagement. Among SNS users, mobile personal talk also increase teens’ network capital. Different SNS activities such as commenting on friend’s Facebook pictures and joining Facebook groups have different relationships with social capital, and such relationships are moderated by mobile personal talk.     

Facebook as a toolkit: A uses and gratification approach to unbundling feature use

Research on social network sites (SNSs) typically employ measures that treat SNS use as homogenous although the user-base, user practices, and feature sets of these tools are increasingly diverse. Using a uses and gratifications approach, we address this problem by reconceptualizing SNSs as collections of features. Survey data collected from undergraduate students at a large Midwestern university (n = 267) revealed that users’ motivations for using Facebook predict their use of different features, such as status updates and Wall posts, but features that share similar capabilities do not necessarily share underlying motivations for use. When these results are contrasted against models employing a more unidimensional measure of Facebook use, we find differences between motivations for both general Facebook use and use of specific features of the site. This suggests that unidimensional measures of SNS use obfuscate motivations for using specific features. Theoretical and methodological implications of these findings and this approach are discussed.     

‘Privacy and public policy delivery – Dichotomy or design’

In recent years the repeated compromise and loss of personal information, from a variety of sources, both public and private, have led to the issue of privacy being increasingly in the public eye. Concurrently public policy developments in line with the UK's Transformational Government agenda have led to ever greater amounts of personal information being made available electronically, and with greater levels of access being explored in order to exploit greater efficiencies in the delivery of public services. Such a rise in both public concern of the security of their data and the levels of access being afforded to improve efficiency has sometimes been seen as dichotomous. This article looks at some of these underlying concerns to suggest some of the issues that need to be addressed when considering privacy in a public policy context, and examines the dangers of retrofitting privacy as an afterthought, and hence the importance of privacy by design.