  Development of mobile web-centric OS such as Firefox OS has created new
challenges, and opportunities for digital investigators. Network traffic
forensic plays an important role in cybercrime investigation to detect
subject(s) and object(s) of the crime. In this chapter, we detect and analyze
residual network traffic artefacts of Firefox OS in relation to two popular
social networking applications (Facebook and Twitter) and one instant messaging
application (Telegram). We utilized a Firefox OS simulator to generate relevant
traffic while all communication data were captured using network monitoring
tools. Captured network packets were examined and remnants with forensic value
were reported. This paper as the first focused study on mobile Firefox OS
network traffic analysis should pave the way for the future research in this
direction.

Cryptography and Security