Now showing items 1-20 of 28

    • A collaborative protocol for anonymous reporting in vehicular ad hoc networks 

      Tripp Barba, Carolina; Urquiza Aguiar, Luis; Aguilar Igartua, Mónica; Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge; Pallarès Segarra, Esteve (Elsevier, 2013-11-01)
      Article
      Restricted access - publisher's policy
      Vehicular ad hoc networks (VANETs) have emerged to leverage the power of modern communication technologies, applied to both vehicles and infrastructure. Allowing drivers to report traffic accidents and violations through ...
    • A LINDDUN-based framework for privacy threat analysis on identification and authentication processes 

      Robles González, Antonio; Parra Arnau, Javier; Forné Muñoz, Jorge (2020)
      Article
      Restricted access - publisher's policy
      Identification and authentication (IA) are security procedures that are ubiquitous in our online life, and that constantly require disclosing personal, sensitive information to non-fully trusted service providers, or to ...
    • A privacy-preserving architecture for the semantic web based on tag suppression 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2010)
      Conference report
      Restricted access - publisher's policy
      We propose an architecture that preserves user privacy in the semantic Web via tag suppression. In tag suppression, users may wish to tag some resources and refrain from tagging some others in order to hinder privacy ...
    • A privacy-protecting architecture for collaborative filtering via forgery and suppression of ratings 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2011)
      Conference report
      Restricted access - publisher's policy
      Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
    • A privacy-protecting architecture for collaborative filtering via forgery and suppression of ratings 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012)
      Article
      Restricted access - publisher's policy
      Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
    • A privacy-protecting architecture for recommendation systems via the suppression of ratings 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012-04)
      Article
      Restricted access - publisher's policy
      Recommendation systems are information-filtering systems that help users deal with information overload. Unfortunately, current recommendation systems prompt serious privacy concerns. In this work, we propose an architecture ...
    • Categorization of bibsonomy tags to apply privacy-preserving mechanisms. 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012-07-24)
      Other
      Open Access
      In this technical report, we approach one of the practical aspects when it comes to represent users' interests from their tagging activity, namely the categorization of tags into high-level categories of interest. The ...
    • Digital hyper-transparency: leading e-government against privacy 

      Rodríguez Hoyos, Ana; Estrada Jiménez, José; Urquiza Aguiar, Luis; Parra Arnau, Javier; Forné Muñoz, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference lecture
      Open Access
      For a long time, the Internet and web technologies have supported a more fluid interaction between public institutions and citizens through e-government. With this spirit, several public services are being offered online. ...
    • Does k-anonymous microaggregation affect machine-learned macrotrends? 

      Rodríguez Hoyos, Ana; Estrada Jiménez, José; Rebollo Monedero, David; Parra Arnau, Javier; Forné Muñoz, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2018-05-16)
      Article
      Open Access
      n the era of big data, the availability of massive amounts of information makes privacy protection more necessary than ever. Among a variety of anonymization mechanisms, microaggregation is a common approach to satisfy the ...
    • Entropy-based privacy against profiling of user mobility 

      Rodriguez Carrion, Alicia; Rebollo Monedero, David; Fornés Guardia, Jordi; Campo Vazquez, Celeste; García Rubio, Carlos; Parra Arnau, Javier; Das, Sajal K (2015-06-01)
      Article
      Open Access
      Location-based services (LBSs) flood mobile phones nowadays, but their use poses an evident privacy risk. The locations accompanying the LBS queries can be exploited by the LBS provider to build the user profile of visited ...
    • Hierarchical categorisation of tags for delicious 

      Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
      Other
      Open Access
      In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. In this technical report, we approach one of ...
    • Hierarchical categorisation of web tags for Delicious 

      Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2011-11-11)
      External research report
      Open Access
      In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. The benefits of social tagging are clear – tags ...
    • Measuring online tracking and privacy risks on Ecuadorian websites 

      Estrada Jiménez, José Antonio; Rodríguez-Hoyos, Ana; Parra Arnau, Javier; Forné Muñoz, Jorge (2019)
      Conference lecture
      Open Access
      Online tracking has become a great enabler of massive surveillance so it is now a critical vector for threatening the privacy of users. Despite the benefits of online tracking for personalized advertising, the complexity ...
    • Measuring the privacy of user profiles in personalized information systems 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Elsevier, 2014-04-01)
      Article
      Restricted access - publisher's policy
      Personalized information systems are information-filtering systems that endeavor to tailor information-exchange functionality to the specific interests of their users. The ability of these systems to profile users is, on ...
    • Mecanismo para evitar ataques por confabulación basados en code passing 

      Jaimez, Marc; Esparza Martín, Óscar; Hernández Gañán, Carlos; Parra Arnau, Javier (2009)
      Conference report
      Restricted access - publisher's policy
      Los agentes móviles son entidades software formadas por código, datos, itinerario y estado, que pueden migrar de host en host autónomamente ejecutando su código. A pesar de sus ventajas, los aspectos de seguridad restringen ...
    • Medición de la privacidad de perfiles de usuario mediante un add-on de navegador 

      Estrada, Jose; Rodríguez, Ana; Parra Arnau, Javier; Forné Muñoz, Jorge; Rebollo Monedero, David (2013)
      Conference lecture
      Restricted access - publisher's policy
      Actualmente, la monitorización de los usuarios en Internet es permanente, y la información obtenida en este proceso es de enorme interés para grandes compañías de publicidad e incluso gobiernos. Además, la gran cantidad ...
    • Nuevo criterio para la estimación de información de estado de certificados en MANET 

      Parra Arnau, Javier (Universitat Politècnica de Catalunya, 2009)
      Master thesis
      Open Access
      En general, la validación del estado de certificados es una operación crítica, que adquiere una mayor complejidad en las redes móviles ad-hoc (Mobile Ad-hoc Networks, MANETs). Los usuarios de las redes MANET precisan ...
    • Nuevo criterio para la estimación de información de estado de certificados en MANET 

      Muñoz Tapia, José Luis; Parra Arnau, Javier; Hernández Gañán, Carlos; Jáimez, Marc (Universidad Politécnica de Cartagena, 2009)
      Conference report
      Restricted access - publisher's policy
      In general, certificate status validation is a critical operation but it is particularly complex in Mobile Ad-hoc Networks (MANETs). MANET users require solutions to manage both the lack of fixed infrastructure inside ...
    • On the measurement of privacy as an attacker's estimation error 

      Rebollo Monedero, David; Parra Arnau, Javier; Diaz, Claudia; Forné Muñoz, Jorge (2012)
      Article
      Open Access
      A wide variety of privacy metrics have been proposed in the literature to evaluate the level of protection offered by privacy enhancing-technologies. Most of these metrics are specific to concrete systems and adversarial ...
    • On the regulation of personal data distribution in online advertising platforms 

      Estrada Jiménez, José Antonio; Parra Arnau, Javier; Rodríguez Hoyos, Ana Fernanda; Forné Muñoz, Jorge (Elsevier, 2019-03)
      Article
      Restricted access - publisher's policy
      Online tracking is the key enabling technology of modern online advertising. In the recently established model of real-time bidding (RTB), the web pages tracked by ad platforms are shared with advertising agencies (also ...