WeChat

Posts tagged “WeChat”

Should We Chat? Privacy in the WeChat Ecosystem

We conducted the first analysis of WeChat’s tracking ecosystem. Using reverse engineering methods to intercept WeChat’s network requests, we identified exactly what types of data the WeChat app is sending to its servers, and when. This report is part one of a two-part series on a privacy and security analysis of the WeChat ecosystem.

Privacy in the WeChat Ecosystem Explained

This FAQ accompanies the full report on privacy in the WeChat ecosystem. We analyzes privacy issues with popular app WeChat by reviewing the data collected by the app and sent to WeChat servers during the regular operation of its various features. We find that they collect more usage data than is disclosed in the WeChat privacy policy.

微信监控诠释

公民实验室2020年5月7日发布报告指出,中国最流行的社交媒体软件微信是对平台上的文档和图像内容实施监控,并使用监控所得的数据训练其审查系统。本文是对该报告的概述,以及与研究团队的一些常见问答。

微信監控诠釋

公民實驗室2020年5月7日發布報告指出,中國最流行的社交媒體軟件微信是對平台上的文檔和圖像內容實施監控,並使用監控所得的數據訓練其審查系統。本文是對該報告的概述,以及與研究團隊的一些常見問答。

Citizen Lab at FOCI ’19

This year, Citizen Lab researchers will present on issues ranging from WeChat image filtering to the methodologies used for identifying commercial spyware abuses.

“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。

(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.