ACCORD: Constraint-driven Mediation of Multi-user Conflicts in Cloud Services

Abhiroop Tippavajjula, Primal Pappachan, Anna Squicciarini, Jose Such

Research output: Chapter in Book/Report/Conference proceedingConference contribution


When multiple users adopt collaborative cloud services like Google Drive to work on a shared resource, incorrect or missing permissions may cause conflicting or inconsistent access or use privileges. These issues (or conflicts) compromise resources confidentiality, integrity, or availability leading to a lack of trust in cloud services. An example conflict is when a user with editor permissions changes the permissions on a shared resource without consent from the original resource owner. In this demonstration, we introduce ACCORD, a web application built on top of Google Drive able to detect and resolve multi-user conflicts. ACCORD employs a simulator to help users preemptively identify potential conflicts and assists them in defining action constraints. Using these constraints, ACCORD can automatically detect and resolve any future conflicts.

Original languageEnglish (US)
Title of host publicationWWW 2024 Companion - Companion Proceedings of the ACM Web Conference
PublisherAssociation for Computing Machinery, Inc
Number of pages4
ISBN (Electronic)9798400701726
StatePublished - May 13 2024
Event33rd ACM Web Conference, WWW 2024 - Singapore, Singapore
Duration: May 13 2024May 17 2024

Publication series

NameWWW 2024 Companion - Companion Proceedings of the ACM Web Conference


Conference33rd ACM Web Conference, WWW 2024

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software

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