3,412 research outputs found

    Anonymous network access using the digital marketplace

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    With increasing usage of mobile telephony, and the trend towards additional mobile Internet usage, privacy and anonymity become more and more important. Previously-published anonymous communication schemes aim to obscure their users' network addresses, because real-world identity can be easily be derived from this information. We propose modifications to a novel call-management architecture, the digital marketplace, which will break this link, therefore enabling truly anonymous network access

    IDEA: A Unifying Theory for Evaluation Systems

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    Online advertising: analysis of privacy threats and protection approaches

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    Online advertising, the pillar of the “free” content on the Web, has revolutionized the marketing business in recent years by creating a myriad of new opportunities for advertisers to reach potential customers. The current advertising model builds upon an intricate infrastructure composed of a variety of intermediary entities and technologies whose main aim is to deliver personalized ads. For this purpose, a wealth of user data is collected, aggregated, processed and traded behind the scenes at an unprecedented rate. Despite the enormous value of online advertising, however, the intrusiveness and ubiquity of these practices prompt serious privacy concerns. This article surveys the online advertising infrastructure and its supporting technologies, and presents a thorough overview of the underlying privacy risks and the solutions that may mitigate them. We first analyze the threats and potential privacy attackers in this scenario of online advertising. In particular, we examine the main components of the advertising infrastructure in terms of tracking capabilities, data collection, aggregation level and privacy risk, and overview the tracking and data-sharing technologies employed by these components. Then, we conduct a comprehensive survey of the most relevant privacy mechanisms, and classify and compare them on the basis of their privacy guarantees and impact on the Web.Peer ReviewedPostprint (author's final draft

    The Treasury securities market: overview and recent development

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    The market for U.S. Treasury securities is by many measures the largest, most active debt market in the world, and the securities play a pivotal role in world financial markets. The market has evolved over time in keeping with the changing needs of both the Treasury and investors. After describing the market's structure and examining the factors driving the demand for Treasury securities in some detail, this article discusses recent developments, including the introduction of inflation-indexed securities and a decline in the issuance of Treasury securities.Treasury bills ; Treasury notes ; Government securities
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