Secret picture: An efficient tool for mitigating deletion delay on OSN

Shangqi Lai, Joseph K. Liu, Kim-Kwang Raymond Choo, Kaitai Alexander Liang

    Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

    6 Citations (Scopus)


    With the increasing popularity of online social networks (OSNs) and the ability to access and exchange sensitive user information, user privacy concerns become an important issue which have attracted the attention of researchers and policymakers. For example, deleted pictures or pictures in deleted posts may not be deleted from the OSN server immediately, and hence accessible to another unauthorized user. In this paper, we highlight the deletion delay issue in seven popular OSNs, namely: Facebook, Instagram, MySpace, Tumblr, Flickr, Google+ and Weibo, which can be exploited by another unauthorized user to gain access to these pictures. To ensure OSN users are able to achieve a higher level of privacy, we propose a conceptual privacy-preserving tool for photo sharing, without compromising on transparency and real-time sharing features. We demonstrate the utility of the tool by prototyping a browser extension, which does not require modification of existing OSN systems.

    Original languageEnglish
    Title of host publicationInformation and Communications Security
    Subtitle of host publication17th International Conference, ICICS 2015 Beijing, China, December 9–11, 2015, Revised Selected Papers
    EditorsSihan Qing, Kwangjo Kim, Eiji Okamoto, Dongmei Liu
    Place of PublicationSwitzerland
    Number of pages11
    ISBN (Electronic)9783319298146
    ISBN (Print)9783319298139
    Publication statusPublished - 1 Mar 2016

    Publication series

    NameLecture Notes in Computer Science
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349


    • Deletion delay
    • Online social networks
    • Photo sharing
    • Privacy attacks
    • Privacy-preserving for social networks

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