UC Browser is the most popular mobile web browser in China and India, boasting over 500 million users. This report provides a detailed analysis of how UC Browser manages and transmits user data, particularly private data, during its operation. Our research was prompted by revelations in a document leaked by Edward Snowden on which the Canadian Broadcasting Corporation (CBC) was preparing a story.

UC浏览器是一种移动浏览器，它目前拥有超过5亿的注册用户，是中国和印度最受欢迎的手机浏览器。在《啰嗦的松鼠：UC浏览器的隐私与安全问题》这一报告中，公民实验室(Citizen Lab)发现中文和英文安卓版UC浏览器中存在多个隐私及安全漏洞， 并讨论了它们的重要性。

In this article, Sarah McKune calls for the encryption and anonymity debate to address the aspects of human rights that are unique to digital space.

Citizen Lab Senior Legal Researcher Sarah McKune explores the link between the United Nations’ human rights mechanisms and cybersecurity. The post also features an interview with UN Special Rapporteur on freedom of opinion and expression David Kaye.

This post describes our analysis of China’s “Great Cannon,” our term for an attack tool that we identify as separate from, but co-located with, the Great Firewall of China. The first known usage of the Great Cannon is in the recent large-scale novel DDoS attack on both GitHub and servers used by GreatFire.org.

Senior Legal Advisor Sarah McKune has contributed a chapter to a new book from Oxford University Press, China and Cybersecurity: Espionage, Strategy and Politics in the Digital Domain (eds. Jon R. Lindsay, Tai Ming Cheung, Derek S. Reveron). Her chapter is entitled “’Foreign Hostile Forces’: The Human Rights Dimension of China’s Cyber Campaigns.”

The research findings documented in this report suggest that Hacking Team may have continued to provide updated versions of its spyware to the same attacker who have targeted ESAT journalists based in the United States in 2014, despite reports of use of the spyware against journalists.

In response to the call for submissions of the United Nations Special Rapporteur on freedom of opinion and expression regarding the use of encryption and anonymity in digital communications, the Citizen Lab and independent researcher Collin Anderson have submitted a joint analysis, entitled “The need for democratization of digital security solutions to ensure the right to freedom of expression.”

A new report, entitled “Communities @ Risk: Targeted Digital Threats Against Civil Society,” involved 10 civil society groups that enrolled as study subjects over a period of four years. The study sought to obtain greater visibility into an often overlooked digital risk environment affecting–whether they know it or not–many of society’s most essential institutions.

The trajectories of the U.S. and Chinese governments on cyber security have officially diverged with the May 19 unsealing of an indictment against five Chinese nationals accused of cyber espionage against U.S. companies.