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Privacy and temporal aware allocation of data in Decentralized Online Social Networks.

Distributed Online Social Networks (DOSNs) have recently been proposed to grant users more control over the data they share with the other users. Indeed, in contrast to centralized Online Social Networks (such as Facebook), DOSNs are not based on centralized storage services, because the contents shared by the users are stored on the devices of the users themselves. One of the main challenges in a DOSN comes from guaranteeing availability of the users' contents when the data owner disconnects from the network. In this paper, we focus our attention on data availability by proposing a distributed allocation strategy which takes into account both the privacy policies defined on the contents and the availability patterns (online/offline) of the usersin order to allocate their contents on trusted nodes. A linear predictor is used to model and to predict the availability status of the users in a future time interval, on the basis of their  past temporal behaviour. We conduct a set of experiments on a set of traces taken from Facebook. The results prove the effectiveness of our approach by showing high availability of users' profiles.


12th International Conference on Green, Pervasive and Cloud Computing (GPC 2017), Cetara, Italy, 2017

Autori esterni: Barbara Guidi (Dipartimento di Informatica, Università di Pisa), Laura Ricci (Dipartimento di Informatica, Università di Pisa), Vincenzo Ambriola (Dipartimento di Informatica, Università di Pisa)
Autori IIT:

Tipo: Contributo in atti di convegno
Area di disciplina: Information Technology and Communication Systems

File: main.pdf

Attività: Sicurezza nel Cloud Computing
Architetture, protocolli e meccanismi di sicurezza per sistemi e servizi distribuiti