微信有超過十億每月活躍使用者，我們分析了微信使用的主要網路協定 MMTLS 的安全和隱私特性，並發佈了首篇公開的研究報告。

微信是一個具有許多功能的應用程式。之前我們研究過圍繞小程式的隱私問題，以及微信對文字和圖片訊息的監視及審查。在這項研究中，我們主要關注微信的網路加密協定及其安全性。

This report performs the first public analysis of MMTLS, the main network protocol used by WeChat, an app with over one billion users. The report finds that MMTLS is a modified version of TLS, however some of the modifications have introduced cryptographic weaknesses.

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.

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.

As a follow-up to our March 2020 report, we conducted daily tests on WeChat and collected 2,174 censored keywords between January to May 2020. This data provides a view into how narratives and messaging on the pandemic are controlled and molded on social media in China.

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。

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。

WeChat communications conducted entirely among non-China-registered accounts are subject to pervasive content surveillance that was previously thought to be exclusively reserved for China-registered accounts.