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An Android Communication App Forensic Taxonomy.

Abdullah Azfar1, Kim-Kwang Raymond Choo2,3, Lin Liu4

  • 1Information Assurance Research Group, University of South Australia, Adelaide, SA, 5001, Australia.

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This study introduces a new taxonomy for Android communication app forensic artifacts. It aids investigators in efficiently analyzing evidence from popular messaging and VoIP applications.

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Area of Science:

  • Digital Forensics
  • Mobile Device Investigation
  • Computer Science

Background:

  • Android devices and applications are prevalent, making Android forensics a key area in mobile investigations.
  • Communication apps (instant messaging, VoIP) are widely used, including by individuals involved in criminal activities.
  • A structured approach is needed to effectively collect and analyze forensic data from these apps.

Purpose of the Study:

  • To develop a comprehensive taxonomy for forensic artifacts found in Android communication applications.
  • To facilitate the efficient retrieval and examination of crucial evidence from mobile devices.
  • To support digital forensic investigations involving the use of Android communication apps.

Main Methods:

  • Examined 30 popular Android communication applications.
  • Performed logical data extraction from Android phone images using the XRY forensic tool.
  • Identified and recovered various forensic artifacts, including contact lists and message chronologies.

Main Results:

  • Recovered significant forensic information from the examined Android communication apps.
  • Proposed a novel two-dimensional taxonomy categorizing artifacts by app type and artifact class.
  • Summarized identified artifacts using the developed taxonomy for clarity and usability.

Conclusions:

  • The proposed taxonomy provides a structured framework for understanding Android communication app forensics.
  • The study's findings and taxonomy will enhance the efficiency of digital evidence collection and analysis.
  • This work is expected to be a valuable resource for forensic investigators working with Android devices.