“未阅先焚” 2： 微信如何实现实时审查用户对话中的敏感图片
本报告延续上一篇针对微信朋友圈图片过滤技术的研究，分析微信如何在聊天功能中实现实时图片过滤。微信是中国腾讯控股有限公司旗下的即时通讯应用，目前是中国最受欢迎的聊天软件之一，也是全球排名第四的最流行聊天软件。朋友圈是微信上最常用的功能之一，其中图片是用户最期望看到的内容分享形式。
Search Results for: weibo
(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.
Citizen Lab Summer Institute on Monitoring Internet Openness and Rights
UPDATE: The 2019 Citizen Lab Summer Institute will take place on July 31-August 2 at the University of Toronto in Toronto, Canada. The annual Citizen Lab Summer Institute (CLSI) workshop is a meeting place for researchers and practitioners from academia, civil society, and the private sector who are working on Internet openness, security, and rights…. Read more »
Censored Commemoration: Chinese Live Streaming Platform YY Focuses Censorship on June 4 Memorials and Activism in Hong Kong
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.
Citizen Lab Summer Institute 2019
Held July 31 – August 2 in Toronto, the Citizen Lab Summer Institute (CLSI) workshop is a meeting place for researchers and practitioners from academia, civil society, and the private sector who are working on Internet openness, security, and rights.
CLSI 2018 in Review
The Citizen Lab Summer Institute (CLSI) brings together technologists, political scientists, academics, researchers, activists, artists, and members of civil society to address some the most pressing issues at the centre of technology and human rights.
An analysis of censorship in Chinese open source projects
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.
How WeChat Filters Images for One Billion Users
New Citizen Lab research reveals how China’s most popular app filters sensitive images and suggests techniques for evasion.
(Can’t) Picture This: An Analysis of Image Filtering on WeChat Moments
This report demonstrates the technical underpinnings of how WeChat image censorship operates and suggests possible evasion strategies.