Posts tagged “China”
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.
今年是中国1989年天安门民主运动的30周年纪念。当年，学生自发举行一系列游行示威，呼吁实施民主改革，中共领导人则选择使用武力镇压运动。中国红十字会称有2700名民众在武力镇压中身亡，但有不少研究机构指出死伤人数远不止这个。在2014年解密的一份美国政府机密文件显示，中国内部统计的死亡人数达10,454人。
今年是中國1989年天安門民主運動的30週年紀念。當年，學生自發舉行一系列遊行示威，呼籲實施民主改革，中共領導人則選擇使用武力鎮壓運動。中國紅十字會稱有2700名民眾在武力鎮壓中身亡，但有不少研究機構指出死傷人數遠不止這個。在2014年解密的一份美國政府機密文件顯示，中國內部統計的死亡人數達10,454人。
In the days leading up to the 30th anniversary of June 4 1989, YY, a popular live streaming platform in mainland China, updated its keyword blacklists with content focused on Democracy Movement related memorials and activism in Hong Kong.
The Citizen Lab’s Ron Deibert and Sarah McKune don’t mince words in a recent op-ed for Just Security about Google’s plan to create a search engine that conforms to China’s demand for censorship.
A new paper by the Citizen Lab investigates how Chinese censorship reaches independent developers and reveals that, while developers include censorship lists in open source projects, there is little apparent similarity in these blacklists, raising several questions about their origins.
New Citizen Lab research reveals how China’s most popular app filters sensitive images and suggests techniques for evasion.
This report demonstrates the technical underpinnings of how WeChat image censorship operates and suggests possible evasion strategies.
Investigation of a malware campaign targeting the Tibetan community and discussion of the challenges in analyzing closed espionage ecosystems.
