Tesis doctoralsDepartament d'Enginyeria Informàtica i Matemàtiques

Contributions to Lifelogging Protection In Streaming Environments

  • Dades identificatives

    Identificador:  TDX:3105
    Autors:  Pàmies Estrems, David
    Resum:
    Every day, more than five billion people generate some kind of data over the Internet. As a tool for accessing that information, we need to use search services, either in the form of Web Search Engines or through Personal Assistants. On each interaction with them, our record of actions via logs, is used to offer a more useful experience. For companies, logs are also very valuable since they offer a way to monetize the service. Monetization is achieved by selling data to third parties, however query logs could potentially expose sensitive user information: identifiers, sensitive data from users (such as diseases, sexual tendencies, religious beliefs) or be used for what is called ”life-logging”: a continuous record of one’s daily activities. Current regulations oblige companies to protect this personal information. Protection systems for closed data sets have previously been proposed, most of them working with atomic files or structured data. Unfortunately, those systems do not fit when used in the growing real-time unstructured data environment posed by Internet services. This thesis aims to design techniques to protect the user’s sensitive information in a non-structured real-time streaming environment, guaranteeing a trade-off between data utility and protection. In this regard, three proposals have been made in efficient log protection. The first is a new method to anonymize query logs, based on probabilistic k-anonymity and some de-anonymization tools to determine possible data leaks. A second method has been improved in terms of a configurable trade-off between privacy and usability, achieving a great improvement in terms of data utility. Our final contribution concerns Internet-based Personal Assistants. The information generated by these devices is likely to be considered life-logging, and it can increase the user’s privacy risks. The proposal is a protection scheme that combines log anonymization and sanitizable signatures.
  • Altres:

    Editor: Universitat Rovira i Virgili
    Data: 2020-09-10, 2020-10-20T11:28:18Z, 2020-10-20T11:28:18Z
    Identificador: http://hdl.handle.net/10803/669809
    Departament/Institut: Departament d'Enginyeria Informàtica i Matemàtiques, Universitat Rovira i Virgili.
    Idioma: eng
    Autor: Pàmies Estrems, David
    Director: García Alfaro, Joaquín, Castellà-Roca, Jordi
    Font: TDX (Tesis Doctorals en Xarxa)
    Format: application/pdf, application/pdf, 190 p.
  • Paraules clau:

    Web Search Engines
    Data Streams
    Anonymization
    Motores de Búsqueda Web
    Flujos de Datos
    Anonimización
    Motors de Cerca Web
    Fluxos de Dades
    Anonimització
    Enginyeria i arquitectura
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