Posts tagged “WeChat”
The analysis of YY and WeChat indicates broad censorship—blocking sensitive terms as well as general information and neutral references—potentially limiting the public’s ability to access information that may be essential to their health and safety.
This year, Citizen Lab researchers will present on issues ranging from WeChat image filtering to the methodologies used for identifying commercial spyware abuses.
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。
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.
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.
加拿大多倫多大學公民實驗室（Citizen Lab）研究表明微信從一年多前就開始屏蔽與“十九大”有關的關鍵詞，隨著十九大日期逼近，該關鍵詞庫也在不斷更新。關鍵詞涵蓋內容非常廣泛，不僅包括了批評性言論，許多對中央政策和黨意識形態的中性指稱也被過濾。
加拿大多伦多大学公民实验室（Citizen Lab）研究表明微信从一年多前就开始屏蔽与“十九大”有关的关键词，随着十九大日期逼近，该关键词库也在不断更新。关键词涵盖内容非常广泛，不仅包括了批评性言论，许多对中央政策和党意识形态的中性指称也被过滤。
The 19th National Communist Party Congress was held from October 18-24 2017. WeChat, China’s most popular chat app, blocked a broad range of content related to the Congress.
