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[liberationtech] New Citizen Lab research post on LINE Keyword Filtering

Ronald Deibert r.deibert at
Tue Oct 7 11:06:36 PDT 2014

Hi Libtech

Citizen Lab has a new research post up today regarding our ongoing analysis of LINE keyword filtering.

The summary is as follows:

On Wednesday September 24, 2014, regionally-based keyword filtering features in the LINE chat app were updated. The most notable change is the introduction of regular expressions to the keyword list, which enables more advanced keyword matching. The addition of regular expressions demonstrates LINE Corporation’s continued commitment to filtering keywords for users based in China and a push to improve the underlying technology.

And the link to the report is here:


Ronald Deibert
Director, the Citizen Lab 
and the Canada Centre for Global Security Studies
Munk School of Global Affairs
University of Toronto
(416) 946-8916
r.deibert at

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