A role and trust access control model for preserving privacy and image anonymization in social networks

Nadav Voloch, Priel Nissim, Mor Elmakies, Ehud Gudes

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Over the last decade Online Social Networks (OSN) privacy has been thoroughly studied in many aspects. Some of these privacy related aspects are trust and credibility involving the OSN user-data conveyed by different relationships in the network. One of OSN major problems is that users expose their information in a manner thought to be relatively private, or even partially public, to unknown and possibly unwanted entities, such as adversaries, social bots, fake users, spammers or data-harvesters. Preventing this information leakage is the target of many OSN privacy models, such as Access Control, Relationship based models, Trust based models and many others. In this paper we suggest a new Role and Trust based Access Control model, denoted here as RTBAC, in which roles, that manifest different permissions, are assigned to the users connected to the Ego-node (the user sharing the information), and in addition, every user is evaluated trust wise by several criteria, such as total number of friends, age of user account, and friendship duration. An interesting extension of the model of image anonymization is also given, where a user that has a certain role with a proper permission can access a partial instance of the data, if a sufficient trust level is not achieved. These role and trust assessments provide more precise and viable information sharing decisions and enable better privacy control in the social network.

Original languageEnglish
Title of host publicationTrust Management XIII - 13th IFIP WG 11.11 International Conference, IFIPTM 2019, Proceedings
EditorsWeizhi Meng, Christian Damsgaard Jensen, Piotr Cofta, Tyrone Grandison
PublisherSpringer
Pages19-27
Number of pages9
ISBN (Print)9783030337155
DOIs
StatePublished - 1 Jan 2019
Event13th IFIP WG 11.11 International Conference on Trust Management, IFIPTM 2019 - Copenhagen, Denmark
Duration: 17 Jul 201919 Jul 2019

Publication series

NameIFIP Advances in Information and Communication Technology
Volume563 IFIP
ISSN (Print)1868-4238
ISSN (Electronic)1868-422X

Conference

Conference13th IFIP WG 11.11 International Conference on Trust Management, IFIPTM 2019
Country/TerritoryDenmark
CityCopenhagen
Period17/07/1919/07/19

Keywords

  • Access control
  • Social networks privacy
  • Trust-based privacy models

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