Ara es mostren els items 1-20 de 46

    • 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
      Accés restringit per política de l'editorial
      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
      Accés obert
      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 measurement study of online tracking and advertising in Ibero-America 

      Estrada Jiménez, José Antonio; Parra Arnau, Javier; Rodríguez Hoyos, Ana Fernanda; Forné Muñoz, Jorge; Pallarès Segarra, Esteve (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Accés obert
      The ability of the online marketing industry to track and pro le users' Web-browsing activity is what enables effective, tailored-made advertising services. The intrusiveness of these practices and the increasing ...
    • A privacy-preserving architecture for the semantic web based on tag suppression 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (Springer, 2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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
      Accés restringit per política de l'editorial
      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
      Accés restringit per política de l'editorial
      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 survey of the role of viewability within the online advertising ecosystem 

      Expósito Ventura, Marta; Ruipérez Valiente, José A.; Parra Arnau, Javier; Forné Muñoz, Jorge (Institute of Electrical and Electronics Engineers (IEEE), 2021-09-27)
      Article
      Accés obert
      Within the online advertising ecosystem, viewability is defined as the metric that measures if an ad impression had the chance of being viewable by a potential consumer. Although this metric has been presented as a potential ...
    • An adversarial-risk-analysis approach to counterterrorist online surveillance 

      Gil Espinasa, César; Parra Arnau, Javier (Multidisciplinary Digital Publishing Institute (MDPI), 2019-01-24)
      Article
      Accés obert
      The Internet, with the rise of the IoT, is one of the most powerful means of propagating a terrorist threat, and at the same time the perfect environment for deploying ubiquitous online surveillance systems.This paper ...
    • Anonymizing trajectory data: limitations and opportunities 

      Guerra Balboa, Patricia; Miranda Pascual, Àlex; Parra Arnau, Javier; Forné Muñoz, Jorge; Strufe, Thorsten (AAAI Press (Association for the Advancement of Artificial Intelligence), 2022)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      A variety of conditions and limiting properties complicate the anonymization of trajectory data, since they are sequential, high-dimensional, bound to geophysical restrictions and easily mapped to semantic points of interest ...
    • Categorization of bibsonomy tags to apply privacy-preserving mechanisms. 

      Parra Arnau, Javier; Rebollo Monedero, David; Forné Muñoz, Jorge (2012-07-24)
      Altres
      Accés obert
      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 ...
    • Differentially private data publishing via cross-moment microaggregation 

      Parra Arnau, Javier; Domingo Ferrer, Josep; Soria Comas, Jordi (Elsevier, 2020-01)
      Article
      Accés obert
      Differential privacy is one of the most prominent privacy notions in the field of anonymization. However, its strong privacy guarantees very often come at the expense of significantly degrading the utility of the protected ...
    • Differentially private publication of database streams via hybrid video coding 

      Parra Arnau, Javier; Strufe, Thorsten; Domingo Ferrer, Josep (2022-07-08)
      Article
      Accés obert
      While most anonymization technology available today is designed for static and small data, the current picture is of massive volumes of dynamic data arriving at unprecedented velocities. From the standpoint of anonymization, ...
    • 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)
      Comunicació de congrés
      Accés obert
      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
      Accés obert
      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
      Accés obert
      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 ...
    • Fine-grained control over tracking to support the ad-based web economy 

      Achara, Jagdish Prasad; Parra Arnau, Javier; Castelluccia, Claude (2018-09-30)
      Article
      Accés obert
      The intrusiveness of Web tracking and the increasing invasiveness of digital advertising have raised serious concerns regarding user privacy and Web usability, leading a substantial chunk of the populace to adopt ad-blocking ...
    • Generación sintética de trayectorias mediante aprendizaje profundo con garantías de privacidad diferencial 

      Rubio Jornet, Víctor; Parra Arnau, Javier; Forné Muñoz, Jorge (Jornadas de Ingeniería Telemática (JITEL), 2023)
      Comunicació de congrés
      Accés obert
      La generación sintética de trayectorias es cru- cial para poder realizar estudios y análisis en diferentes campos, como la movilidad urbana, los protocolos de redes móviles, la epidemiología computacional o la simulación ...
    • Hierarchical categorisation of tags for delicious 

      Parra Arnau, Javier; Perego, Andrea; Ferrari, Elena; Forné Muñoz, Jorge; Rebollo Monedero, David (2012)
      Altres
      Accés obert
      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)
      Report de recerca
      Accés obert
      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 ...