Multiuser Privacy and Security Conflicts in the Cloud

Eman Alhelali, Marvin Ramokapane, Jose M. Such

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

1 Citation (Scopus)
18 Downloads (Pure)


Collaborative cloud platforms make it easier and more convenient for multiple users to work together on files (GoogleDocs, Office365) and store and share them (Dropbox, OneDrive). However, this can lead to privacy and security conflicts between the users involved, for instance when a user adds someone to a shared folder or changes its permissions. Such multiuser conflicts (MCs), though known to happen in the literature, have not yet been studied in-depth. In this paper, we report a study with 1,050 participants about MCs they experienced in the cloud. We show what are the MCs that arise when multiple users work together in the cloud and how and why they arise, what is the prevalence and severity of MCs, what are their consequences on users, and how do users work around MCs. We derive recommendations for designing mechanisms to help users avoid, mitigate, and resolve MCs in the cloud.
Original languageEnglish
Title of host publicationCHI 2023 - Proceedings of the 2023 CHI Conference on Human Factors in Computing Systems
PublisherAssociation for Computing Machinery (ACM)
Number of pages16
ISBN (Print)978-1-4503-9421-5
Publication statusPublished - 19 Apr 2023
Event2023 ACM CHI Conference on Human Factors in Computing Systems - Germany and Online, Humburg, Germany
Duration: 23 Apr 202328 Apr 2023

Publication series

NameCHI: Conference on Human Factors in Computing Systems
ISSN (Print)2159-6468


Conference2023 ACM CHI Conference on Human Factors in Computing Systems
Abbreviated titleCHI23
Internet address

Bibliographical note

Publisher Copyright:
© 2023 ACM.

Structured keywords

  • Cyber Security
  • Cloud
  • Security
  • Privacy
  • Security Conflicts
  • Privacy Conflicts


  • Multi User Conflicts
  • Multi-party Privacy Conflicts
  • Interdepent Privacy


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