Tag Archives: Censorship

Blue Coat Errors: Sites Miscategorized as “Pornography”

As a follow-up to our post about the number of sites miscategorized by SmartFilter, our tests with Blue Coat show that miscategorization is not a problem limited to a single product. We should be skeptical of any company’s claims that they are able to categorize much of the web accurately, or that their rate of “collateral damage” is very low.

Jason Q. Ng in The Wall Street Journal

Citizen Lab Research Fellow Jason Q. Ng wrote a piece in The Wall Street Journal about the alleged China-related censorship on the international version of Bing.com, the search engine operated by Microsoft.

Internet Filtering in a Failed State: The Case of Netsweeper in Somalia

A new Citizen Lab report has found that Canada-based Netsweeper filtering products have been identified on three ISPs in Somalia.

Correlating political events with keyword censorship on Sina Weibo: The case of “Bo Xilai” (薄熙来)

This post presents a 22-month infographic overview of how events are correlated with blocking of information related to Bo Xilai on Sina Weibo.

Jason Q. Ng in The Atlantic

Citizen Lab Research Fellow Jason Q. Ng published a piece in The Atlantic on 27 November. Titled, “How Tech Companies Can Help Overcome Chinese Censorship”, the piece looks at companies facilitating censorship in China.

Smartfilter: Miscategorization and Filtering in Saudi Arabia and UAE

What do the Trinity Davison Lutheran Church, the Filipino American Women’s Network, the Tucson Jazz Institute, the Sacramento Police Activities League, the Pan Iranist Party of Iran, and the Salvation Army of Houston, Texas have in common?

Their websites are all blocked for Internet users in Saudi Arabia, and for most Internet users in the United Arab Emirates

A Method for Identifying and Confirming the Use of URL Filtering Products for Censorship

The paper presents an initial methodology for identifying and confirming the use of URL filtering products around the world.

Who’s the Boss? The difficulties of identifying censorship in an environment with distributed oversight: a large-scale comparison of Wikipedia China with Hudong and Baidu Baike

This project is a large-scale comparison of the three services, matching thousands of Chinese-language Wikipedia articles with their in-China counterparts, in order to identify the “content gaps” in the two baike. The difficulties of identifying traditional cases of information control in environments with distributed oversight like online enclopedias will be discussed. The research methodology and some of the initial results (including tables of possibly censored articles) will also be presented.

Visualizing Changes in Censorship: Summarizing two months of Sina Weibo keyword monitoring with two interactive charts

The China Chats keyword list was tested on Sina Weibo four times from Jun to Aug 2013. The data allows us to identify changes in censorship on Sina Weibo over time.

Using the China Chats surveillance/censorship keyword list: analyzing blocked terms, search result numbers, and overlaps of censored terms between services

Working with the just-released China Chats keyword list, Jason Q. Ng extended The Citizen Lab/UNM’s analysis by checking whether each of the 4,256 keywords was blocked from searching on Sina Weibo. This report includes further analysis and examination of other potential censorship tactics by Weibo revealed in the data.