Search Results for: wechat

(Can’t) Picture This 2: An Analysis of WeChat’s Realtime Image Filtering in Chats

In this work, we study how Tencent implements image filtering on WeChat. We found that Tencent implements realtime, automatic censorship of chat images on WeChat based on what text is in an image and based on an image’s visual similarity to those on a blacklist. Tencent facilitates this realtime filtering by maintaining a hash index of MD5 hashes of sensitive image files.

Tibetans blocked from Kalachakra at borders and on WeChat

From January 2 to 13 2017, His Holiness the Dalai Lama is holding a popular Tibetan Buddhist teaching called Kalachakra in Bodh Gaya, India. Increased restrictions from the government of China has barred Tibetans in Tibet from attending the teachings. This report documents blocking of Kalachakra-related keywords on WeChat revealing how restrictions on the ritual extend online.

Citizen Lab Director Ron Deibert interviewed by CNNi on WeChat report

Director Ron Deibert spoke to CNN International on Citizen Lab’s recent report, titled “One App, Two Systems: How WeChat uses one censorship policy in China and another internationally.” Deibert commented on trends of censorship and surveillance in China, and Asian instant messaging applications more broadly.