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.

本报告从技术层面分析微信如何过滤图片，并提出可能的反审查方法。

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.

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。