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Primary User Obfuscation in an Incumbent Informed Spectrum Access SystemMakin, Cameron 24 June 2021 (has links)
With a growing demand for spectrum availability, spectrum sharing has become a high-profile solution to overcrowding. In order to enable spectrum sharing between incumbent/primary and secondary users, incumbents must have spectrum protection and privacy from malicious new entrants. In this Spectrum Access System (SAS) advancement, Primary Users (PUs) are obfuscated with the efforts of the SAS and the cooperation of obedient new entrants. Further, the necessary changes to the SAS to support this privacy scheme are exposed to suggest improvements in PU privacy, Citizens Broadband Radio Service Device (CBSD)-SAS relations, and punishment for unauthorized transmission. Results show the feasibility for PU obfuscation with respect to malicious spectrum sensing users. Simulation results indicate that the obfuscation scheme can deliver location and frequency occupation privacy with 75% and 66% effectiveness respectively in a 100% efficient spectrum utilization oriented obfuscation scheme. A scheme without spectrum utilization constraint shows up to 91% location privacy effectiveness. Experiment trials indicate that the privacy tactic can be implemented on an open-source SAS, however environmental factors may degrade the tactic's performance. / Master of Science / With a growing demand for spectrum availability, wireless spectrum sharing has become a high-profile solution to spectrum overcrowding. In order to enable spectrum sharing between incumbent/primary (e.g.,federal communications, naval radar, users already grandfathered into the band) and secondary users (e.g., commercial communications companies), incumbents must have spectrum protection and privacy from malicious new entrants. In this Spectrum Access System (SAS) advancement, Primary Users (PUs) are obfuscated with the efforts of the incumbent informed SAS and the cooperation of obedient new entrants. Further, the necessary changes to the SAS to support this privacy scheme are exposed to suggest improvements in PU privacy, Citizens Broadband Radio Service Device (CBSD)-SAS relations, and punishment for unauthorized transmission. Results show the feasibility of PU obfuscation with respect to malicious spectrum sensing users. Simulation results indicate that the obfuscation tactic can deliver location and frequency occupation privacy with 75% and 66% effectiveness respectively in a 100% efficient spectrum utilization oriented obfuscation scheme. A scheme without spectrum utilization constraint shows up to 91% location privacy effectiveness. Experiment trials indicate that the privacy tactic can be implemented on an open-source SAS, however environmental factors may degrade the tactic's performance.
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Enhancing Data Utilization through Advanced Differential Privacy Mechanisms / 有用性を向上させる高度な差分プライバシ機構Takagi, Shun 25 March 2024 (has links)
京都大学 / 新制・課程博士 / 博士(情報学) / 甲第25428号 / 情博第866号 / 京都大学大学院情報学研究科社会情報学専攻 / (主査)教授 伊藤 孝行, 教授 鹿島 久嗣, 教授 岡部 寿男, 吉川 正俊(京都大学 名誉教授) / 学位規則第4条第1項該当 / Doctor of Informatics / Kyoto University / DFAM
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<b>EXPLORING FACTORS INFLUENCING ADOPTION AND USAGE OF PRIVACY-ENHANCING TOOLS AMONG SMARTPHONE USERS</b>Renusree Varma Mudduluru (18859075) 24 June 2024 (has links)
<p dir="ltr">In this era of digital surveillance and data breaches, it is important to understand how users protect their smartphone privacy. There needs to be more detailed information regarding the prevalence, factors, and motivations influencing the adoption of privacy-enhancing tools and settings on mobile devices. This study aimed to address this knowledge gap by investigating the use of privacy tools among smartphone users and examining the impact of factors like demographics, awareness levels, and device platforms.</p><p dir="ltr">The study surveyed 342 participants recruited through Amazon Mechanical Turk (MTurk), and the data were analyzed. The survey gathered data on user characteristics, privacy concerns, experiences with breaches, and use of various privacy tools. Statistical analysis showed that demographic factors, particularly age, significantly influenced the use of privacy tools, aligning with previous research. Users with a higher awareness of digital privacy risks were likelier to adopt privacy-enhancing tools. The study found no significant difference in the prevalence and type of privacy tools used between iOS and Android users.</p><p dir="ltr">The study's focus on privacy-enhancing tools among smartphone users and the proposed hypotheses provide valuable insights for law enforcement and forensic practitioners, aiding in digital investigations, evidence collection, and understanding user behavior related to smartphone privacy measures. The study's outcomes contribute to digital forensics, cybersecurity, and privacy domains by providing insights into user behaviors, motivations, and the factors shaping privacy tool adoption on smartphones. These findings can inform the development of more user-centric privacy tools, policies, and educational campaigns, ultimately enhancing digital privacy protection and supporting law enforcement investigations in the digital age.</p>
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Regulating the Internet : privacy under the microscopeWilliams, Elizabeth A., n/a January 1997 (has links)
This thesis is an exploration of privacy as it relates to the Internet in general,
and e-mail communication in particular.
It looks at the philosophy of privacy and tracks the privacy debate in both an
academic and legal framework. It examines the Australian Privacy Act of 1988
and similar legislation overseas. Current government approaches to privacy
and privacy regulation are also examined providing a legislative/political context
for the research.
The fieldwork component of the thesis attempts to unravel individual
perceptions of privacy. It overlays those perceptions of privacy with an
examination of the effects of Internet technology on a conceptual understanding
of privacy.
There is no doubt that the discussion of privacy and the electronic age is
extensive but discussion with individuals about their place in the debate and,
indeed, the legislation is yet to be tackled in an extensive manner. Until we
mesh the views of individuals in the community about their place in the new
communications technology and privacy debate, we will not reap the full
benefits of advances in communications technology. Consumers will remain
reluctant about and suspicious of breaches of their privacy via the Internet.
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Exploring Internet Users ¡¦Information Privacy Concerns -Use the Intention-Based modelsChen, Yan-Bang 26 July 2000 (has links)
No description available.
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The fair information principles : a comparison of U.S. and Canadian privacy policy as applied to the private sector /Crounse, Shane. January 2009 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2009. / Typescript. Includes bibliographical references (leaves 142-174).
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There ought to be a law : the moral and legal aspects of privacy from the nineteenth-century press to twenty-first century attempts to protect individual privacy /Ferrier, Patricia. January 2004 (has links)
Thesis (Ph.D.)--Ohio University, November, 2004. / Includes bibliographical references (leaves 148-153)
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Freedom and privacy the law, the media, and the First amendment /Pember, Don R., January 1900 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1969. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Privacy Preserving Information Sharing in Modern and Emerging PlatformsTian, Yuan 01 May 2018 (has links)
Users share a large amount of information with modern platforms such as web platforms and social platforms for various services. However, they face the risk of information leakage because modern platforms still lack proper security policies. Existing security policies, such as permission systems and isolation, can help regulate information sharing. However, these policies have problems, such as coarse granularity, bad usability, and incompleteness, especially when new features are introduced. I investigate the security impacts of new features in web and mobile platforms and find design problems that lead to user information leakage. Based on these analyses, I propose design principles for permission systems that mediate how information should be shared in modern and emerging platforms, such as web and social platforms, to provide functionality with privacy preserved. I aim to design permission systems that only allow least-privilege information access. Specifically, I utilize program analysis and natural language processing to understand how applications use sensitive data and correlate these data with their functionality. With this understanding, I design schemes that ask for user consent about unexpected information access and automatically reduce overprivileged access. I provide guidelines for platform designers to build their permission systems according to respective adversary models and resources. In particular, I implement the new permission system for social platforms and Internet of Things (IoT) platforms that enable least-privilege information sharing. For the social platforms, I incorporate the primitives of Opaque handle, Opaque display, and User-driven access control (OOU) to design a least-privilege, user-friendly, developer-friendly, and feature-rich permission system. According to my study on Facebook, OOU can be applied to remove or replace 81.2% of sensitive permission instances without affecting functionality. For IoT platforms, I present a new authorization framework, SmartAuth, that supports user-centric, semantic-based authorization. SmartAuth automatically collects security-relevant information from an IoT application’s description, code, and annotations, and generates an authorization user interface to bridge the gap between the functionalities explained to the user and the operations the application actually performs.
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In search of search privacyBrandi, Wesley Antonio 22 July 2011 (has links)
Search engines have become integral to the way in which we use the Web of today. Not only are they an important real time source of links to relevant information, but they also serve as a starting point to the Web. A veritable treasure trove of the latest news, satellite images, directions from anywhere to anywhere, local traffic updates and global trends ranging from the spread of influenza to which celebrity happens to be the most popular at a particular time. The more popular search engines are collecting incredible amounts of information. In addition to indexing significant portions of the Web they record what hundreds of millions of users around the world are searching for. As more people use a particular search engine, it has the potential to record more information on what is deemed relevant (and in doing so provide better relevance in the future, thereby attracting more users). Unfortunately, the relevance derived from this cycle between the search user and the search engine comes at a cost: privacy. In this work, we take an in depth look at what privacy means within the context of search. We discuss why it is that the search engine must be considered a threat to search privacy. We then investigate potential solutions and eventually propose our own in a bid to enhance search privacy. / Thesis (PhD)--University of Pretoria, 2011. / Computer Science / unrestricted
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