This report by Seth Hardy (Senior Security Analyst, Citizen Lab)
describes the technical details of client-side censorship functionality
in the LINE messenger client for Android, and a method for disabling it.
This post is the first in a series of research reports analyzing
information controls and privacy in mobile messaging applications used
in Asia. An introduction to the project can be found here

In this collaborative study between the Citizen Lab and Department of Computer Science at the University of New Mexico we examine the implementation of censorship and surveillance in two IM clients maintained by two different Chinese companies. For a period of more than a year and a half, we downloaded and decrypted the censorship and surveillance keyword lists used by the client software of two IM programs used in China: TOM-Skype and Sina UC.