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Dissertations / Theses on the topic 'Privacy preserving in an online social network'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

García, Recuero Álvaro. "Discouraging abusive behavior in privacy-preserving decentralized online social networks." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S010/document.

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Le principal objectif de cette thèse est d'évaluer les protocoles qui prennent en considération la protection de la vie privée et qui nécessitent seulement des métadonnées locales pour détecter les comportements malveillants sur les réseaux sociaux décentralisés. En appliquant des techniques d'analyse de réseaux sociaux qui réduisent la quantité de métadonnées sensibles, nous obtenons des résultats acceptables comparé aux techniques qui ne préservent pas la vie privée. De plus, nous prévoyons d'élaborer une série de recommandations pour construire de futurs réseaux sociaux décentralisés qui dé

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2

Lin, Zehua. "Privacy Preserving Social Network Data Publishing." Miami University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=miami1610045108271476.

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3

Nguyen, Trang Pham Ngoc. "A privacy preserving online learning framework for medical diagnosis applications." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2022. https://ro.ecu.edu.au/theses/2503.

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Electronic Health records are an important part of a digital healthcare system. Due to their significance, electronic health records have become a major target for hackers, and hospitals/clinics prefer to keep the records at local sites protected by adequate security measures. This introduces challenges in sharing health records. Sharing health records however, is critical in building an accurate online diagnosis framework. Most local sites have small data sets, and machine learning models developed locally based on small data sets, do not have knowledge about other data sets and learning mode

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4

Baatarjav, Enkh-Amgalan. "Privacy Management for Online Social Networks." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc283816/.

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One in seven people in the world use online social networking for a variety of purposes -- to keep in touch with friends and family, to share special occasions, to broadcast announcements, and more. The majority of society has been bought into this new era of communication technology, which allows everyone on the internet to share information with friends. Since social networking has rapidly become a main form of communication, holes in privacy have become apparent. It has come to the point that the whole concept of sharing information requires restructuring. No longer are online social networ

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5

Morrison, Roberta. "Drawing the line : understanding privacy concern, privacy literacy and trust influences on online social network privacy boundaries." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25563.

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At the time of this research, online social network (OSN) participation was approaching ubiquity in the Western world. Online social network participation requires information disclosure to achieve social capital benefit, yet privacy concerns are commonly acknowledged among participants. Thus, understanding how information disclosures in OSNs are rationalised in light of privacy concerns is the topic of this this research. While some research into the privacy calculus has been accumulated in the literature, a complete understanding of the phenomenon is lacking. As a result, this research sough

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6

Chaabane, Abdelberi. "Online Social Networks : Is it the end of Privacy ?" Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENM017/document.

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Les réseaux sociaux en ligne (OSNs) recueillent une masse de données à caractère privé. Le recueil de ces données ainsi que leur utilisation relèvent de nouveaux enjeux économiques et évoquent plusieurs questionnements notamment ceux relatifs à la protection de la vie privée. Notre thèse propose certaines réponses.Dans le premier chapitre nous analysons l'impact du partage des données personnelles de l'utilisateur sur sa vie privée. Tout d'abord, nous montrons comment les intérêts d'un utilisateur -- à titre d'exemple ses préférences musicales -- peuvent être à l'origine de fuite d'information

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7

Bulgurcu, Burcu. "Understanding the information privacy-related perceptions and behaviors of an online social network user." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43380.

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The popularity of Online Social Networks (OSNs) has posed substantial challenges to users in protection of their information privacy. Academic research in this area is still limited in scope and depth. Given the paucity of research in this domain, the following research aims to further our understanding of information privacy in OSNs by focusing on users’ information privacy-related perceptions and behavioral responses. To fulfill this objective, one conceptual and two empirical studies have been conducted in this thesis. The objective of Study #1 is to develop a theoretical foundation for use

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8

Ahmad, Waqar, and Asim Riaz. "Predicting Friendship Levels in Online Social Networks." Thesis, Blekinge Tekniska Högskola, Sektionen för datavetenskap och kommunikation, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3351.

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Abstract Context: Online social networks such as Facebook, Twitter, and MySpace have become the preferred interaction, entertainment and socializing facility on the Internet. However, these social network services also bring privacy issues in more limelight than ever. Several privacy leakage problems are highlighted in the literature with a variety of suggested countermeasures. Most of these measures further add complexity and management overhead for the user. One ignored aspect with the architecture of online social networks is that they do not offer any mechanism to calculate the strength of

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9

Alim, Sophia. "Vulnerability in online social network profiles : a framework for measuring consequences of information disclosure in online social networks." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5507.

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The increase in online social network (OSN) usage has led to personal details known as attributes being readily displayed in OSN profiles. This can lead to the profile owners being vulnerable to privacy and social engineering attacks which include identity theft, stalking and re identification by linking. Due to a need to address privacy in OSNs, this thesis presents a framework to quantify the vulnerability of a user's OSN profile. Vulnerability is defined as the likelihood that the personal details displayed on an OSN profile will spread due to the actions of the profile owner and their frie

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10

Xu, Mengting. "Exploring the influence of privacy control designs on users' interpersonal trust in online social network environments." Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/44679.

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Over more than a decade, IS research has examined the role of trust in the context of technology adoptions, such as website acceptance (Gefen et al. 2003), successful online interactions (Coppola et al. 2004) and recommendation agent usage (Wang and Benbasat 2005). The primary antecedent of trust in this line of research is trustee’s trustworthiness. However, Dashiti et al. (2011) articulated the effect of trust- received (trustor’s felt trust from trustee) on trust-given (trustor’s trust in trustee) and consequently the trusting behaviors in the e-government context. This study aims to inve

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11

Hutton, Luke. "Applying contextual integrity to the study of social network sites." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7795.

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Social network sites (SNSs) have become very popular, with more than 1.39 billion people using Facebook alone. The ability to share large amounts of personal information with these services, such as location traces, photos, and messages, has raised a number of privacy concerns. The popularity of these services has enabled new research directions, allowing researchers to collect large amounts of data from SNSs to gain insight into how people share information, and to identify and resolve issues with such services. There are challenges to conducting such research responsibly, ensuring studies ar

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12

Jamal, Arshad. "Towards a Taxonomy of Privacy Concerns of Online Social Network Sites Users : A Case Study of Facebook Beacon." Thesis, KTH, Data- och systemvetenskap, DSV, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29113.

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More than half a billion people use Online Social Network Sites (OSNS) today. They disclose personally identifiable information such as names, date of birth, email address, phone numbers, and home address on their profiles. Some OSNS users also disclose their political and religious views and personal interests. The huge commercial potential of OSNS users’ information and the integration of OSNS with third party advertisers and/or aggregators pose threats to users’ privacy. This thesis reports a study which contributes to our understanding of the form and nature of online privacy by critically

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13

Rahman, Mahmudur. "Data Verifications for Online Social Networks." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2299.

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Social networks are popular platforms that simplify user interaction and encourage collaboration. They collect large amounts of media from their users, often reported from mobile devices. The value and impact of social media makes it however an attractive attack target. In this thesis, we focus on the following social media vulnerabilities. First, review centered social networks such as Yelp and Google Play have been shown to be the targets of significant search rank and malware proliferation attacks. Detecting fraudulent behaviors is thus paramount to prevent not only public opinion bias, but

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14

Novaes, Neto Nelson. "Internet como um laboratório experimental para a análise do comportamento." Pontifícia Universidade Católica de São Paulo, 2011. https://tede2.pucsp.br/handle/handle/16633.

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Made available in DSpace on 2016-04-29T13:17:36Z (GMT). No. of bitstreams: 1 Nelson Novaes Neto.pdf: 2137731 bytes, checksum: 25a81aebe23bcbbf562d10e4ca33ea55 (MD5) Previous issue date: 2011-10-19<br>The present research had as primary goals: 1) To present a proposal for experimental procedure involving the use of the Internet as a laboratory for analysis of human behavior. 2) To use an online chat environment in order to assess whether users behavior of switching between chat rooms in a chat service can be influenced by the introduction or removal of a stimulus (CAPTCHA). A total of 700

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15

Kim, Dae Wook. "Data-Driven Network-Centric Threat Assessment." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1495191891086814.

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16

Lukacs, Adrienn. "Protection of employees' right to privacy and right to data protection on social network sites : with special regard to France and Hungary." Thesis, Paris 1, 2020. http://www.theses.fr/2020PA01D041.

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Les sites de réseaux sociaux en ligne ont acquis une importance considérable dans la vie quotidienne. Leur utilisation conduit à une circulation sans précédent de données personnelles : des individus du monde entier partagent des données à caractère personnel dans une qualité et une quantité jamais vues auparavant. Parmi les utilisateurs de ces réseaux sociaux en ligne se trouvent des salariés et des candidats à l’embauche. Cela pose des problèmes spécifiques dans le contexte de l'emploi en ce qui concerne la vie privée et la protection des données. Bien que les moyens « traditionnels » de sur

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17

Vranaki, Asma A. I. "Rethinking relations and regimes of power in online social networking sites : tales of control, strife, and negotiations in Facebook and YouTube." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:a0872883-98b3-4215-b000-0974a80cad97.

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This thesis investigates the potentially complex power effects generated in Online Social Networking Sites (‘OSNS’), such as YouTube and Facebook, when legal values, such as copyright and personal data, are protected and/or violated. In order to develop this analysis, in Chapter Two, I critically analyse key academic writings on internet regulation and argue that I need to move away from the dominant ‘regulatory’ lens to my Actor-Network Theory-Foucauldian Power Lens (‘ANT-Foucauldian Power Lens’) in order to be able to capture the potentially complex web of power effects generated in YouTube

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18

Gao, Tianchong. "Privacy Preserving in Online Social Network Data Sharing and Publication." Thesis, 2019. http://hdl.handle.net/1805/20972.

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Indiana University-Purdue University Indianapolis (IUPUI)<br>Following the trend of online data sharing and publishing, researchers raise their concerns about the privacy problem. Online Social Networks (OSNs), for example, often contain sensitive information about individuals. Therefore, anonymizing network data before releasing it becomes an important issue. This dissertation studies the privacy preservation problem from the perspectives of both attackers and defenders. To defenders, preserving the private information while keeping the utility of the published OSN is essential in data an

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19

(7428566), Tianchong Gao. "Privacy Preserving in Online Social Network Data Sharing and Publication." Thesis, 2019.

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<p>Following the trend of online data sharing and publishing, researchers raise their concerns about the privacy problem. Online Social Networks (OSNs), for example, often contain sensitive information about individuals. Therefore, anonymizing network data before releasing it becomes an important issue. This dissertation studies the privacy preservation problem from the perspectives of both attackers and defenders. </p> <p><br></p> <p>To defenders, preserving the private information while keeping the utility of the published OSN is essential in data anonymization. At one extreme, the final dat

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20

Liu, Po-Yi, and 劉柏毅. "An Access Control Scheme for Preserving User Privacy in Online Social Networks." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/30762444947548861021.

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碩士<br>國立清華大學<br>資訊工程學系<br>100<br>Online Social Networks (OSNs) have attracted a phenomenal number of users for sharing data and socialization recently. However, existing OSNs are facing security and privacy issues. OSNs possess plenty of user data, which might be leaked either by OSN providers or other OSN users if unsophisticated security mechanisms are used. Besides, improper or complicated privacy settings offered by some OSNs prohibits users to thoroughly protect their privacy. In this paper, we propose a secure OSN framework with an efficient access control mechanism for preserving user d

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21

"Privacy preserving in serial data and social network publishing." 2010. http://library.cuhk.edu.hk/record=b5894365.

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Liu, Jia.<br>"August 2010."<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2010.<br>Includes bibliographical references (p. 69-72).<br>Abstracts in English and Chinese.<br>Chapter 1 --- Introduction --- p.1<br>Chapter 2 --- Related Work --- p.3<br>Chapter 3 --- Privacy Preserving Network Publication against Structural Attacks --- p.5<br>Chapter 3.1 --- Background and Motivation --- p.5<br>Chapter 3.1.1 --- Adversary knowledge --- p.6<br>Chapter 3.1.2 --- Targets of Protection --- p.7<br>Chapter 3.1.3 --- Challenges and Contributions --- p.10<br>Chapter 3.2 --- Preliminaries and P

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22

Chen, Jiayi. "Defending against inference attack in online social networks." Thesis, 2017. https://dspace.library.uvic.ca//handle/1828/8364.

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The privacy issues in online social networks (OSNs) have been increasingly arousing the public awareness since it is possible for attackers to launch several kinds of attacks to obtain users' sensitive and private information by exploiting the massive data obtained from the networks. Even if users conceal their sensitive information, attackers can infer their secrets by studying the correlations between private and public information with background knowledge. To address these issues, the thesis focuses on the inference attack and its countermeasures. First, we study how to launch the infe

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23

HU, SHU-YA, and 胡淑雅. "The Influence of Web 3.0 Application on Online Social Network Users' Privacy." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/42766143019603166845.

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碩士<br>國立臺灣科技大學<br>管理學院MBA<br>100<br>The ultimate goal of marketing is to use the minimum cost to maximize the profit on sales via various marketing methods to collect and analyze consumer behavior, such as: relationship marketing, Internet marketing, one-on-one Internet marketing, data mining, database marketing, customer value, consumer behavior and so on, through the integrated use of these marketing methods and techniques, companies are finally able to reach an accurate marketing purposes. With the internet dependent enhancement, the importance of mental activity, almost all done through th

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24

Koll, David. "Towards a Robust and Secure Decentralized Online Social Network." Doctoral thesis, 2014. http://hdl.handle.net/11858/00-1735-0000-0015-A37D-6.

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25

Yousef, Yaacoub S. "Identifying the causes and effects of poor privacy practices by online social network users: The potential of advisory monitoring software in changing user behaviour." Thesis, 2018. https://arro.anglia.ac.uk/id/eprint/704246/6/Yousef_2018.pdf.

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In this thesis the behaviour of online social network users is examined, with a particular focus on user activities that preserve or compromise personal privacy. A two-fold approach to data collection was used, with a large-scale online survey (n=90 respondents) that measured user's online social network use (using Facebook as a case study) and their personality traits (via Cattel's 16 Personality Factors questionnaire), followed by a smaller number of semi-structured interviews (n=14 participants). A hypothesis under examination was that personality traits serve to predict the behaviour of o

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26

"Managing a User's Vulnerability on a Social Networking Site." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.29638.

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abstract: Users often join an online social networking (OSN) site, like Facebook, to remain social, by either staying connected with friends or expanding social networks. On an OSN site, users generally share variety of personal information which is often expected to be visible to their friends, but sometimes vulnerable to unwarranted access from others. The recent study suggests that many personal attributes, including religious and political affiliations, sexual orientation, relationship status, age, and gender, are predictable using users' personal data from an OSN site. The majority of us

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27

Rodrigues, Nelson Jorge dos Santos. "Está por aí alguém?: percepção da exposição e da privacidade nas redes sociais, entre estudantes universitários." Master's thesis, 2018. http://hdl.handle.net/10071/17887.

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As redes sociais online têm conhecido uma taxa de adoção mundial sem precedentes no universo das tecnologias de informação. Não obstante as inúmeras vantagens decorrentes da utilização das redes sociais online, estes sistemas vivem da partilha de informação, por vezes privada, dos seus utilizadores. Apesar das redes sociais oferecerem inúmeras funcionalidades de gestão de definições e preferências de privacidade e segurança, muitos utilizadores optam – de forma consciente ou não – em efetuar uma partilha excessiva, ou não controlada, de informação pessoal com as redes sociais. A partilh

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28

Gandouz, Ala Eddine. "PROTECT_U: Un système communautaire pour la protection des usagers de Facebook." Thèse, 2012. http://hdl.handle.net/1866/8799.

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Chaque année, le nombre d’utilisateurs des réseaux sociaux augmente à une très grande vitesse. Des milliers de comptes usagés incluant des données privées sont créés quotidiennement. Un nombre incalculable de données privées et d'informations sensibles sont ainsi lues et partagées par les différents comptes. Ceci met en péril la vie privée et la sécurité de beaucoup d’utilisateurs de ces réseaux sociaux. Il est donc crucial de sensibiliser ces utilisateurs aux dangers potentiels qui les guettent. Nous présentons Protect_U (Hélou, Gandouz et al. 2012), un système de protection de la vie privée

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