How To Be Censored By China Online
(AP | NY | December 3, 2002)
Internet sites on democracy, Tibet and Taiwan were among Web
destinations most frequently blocked by the Chinese government,
a study of Chinese online access shows. Researchers at
Harvard Law School's Berkman Center for Internet & Society
said Tuesday that other sites blocked included those on
health, education, news, entertainment, religion and pornography.
Ben Edelman, a Berkman researcher, and Jonathan Zittrain,
the center's co-director, checked more than 204,000 Web sites,
identified in part using search engines Google and Yahoo!, and
found more than 19,000 inaccessible at least some of the time.
The top 10 Google results using the key words "Tibet," "Taiwan China"
and "equality" were all blocked, as were eight of the top 10 results
using "democracy China" and "dissident China." Seven of the top 10
were blocked using "Taiwan" alone and "revolution."
China has been trying to combat independence movements in Tibet
and considers Taiwan its territory. Democracy and human rights
have also been politically sensitive topics for the communist
government. The country often blocks an entire Web site, even if
only parts of the site contain sensitive information,
Edelman said. For instance, it blocks several sites for leading US
universities, including Columbia University and the Massachusetts
Institute of Technology.
Edelman noted that the blocked university sites host campus
pro-democracy groups. One, MIT, also hosts scrambling software that
makes e-mail unreadable to censors.
According to a test Tuesday using Berkman's tools, The Associated Press
also found that Berkman's site was inaccessible in China,
though Harvard's site was reachable. Edelman said the Berkman site
had been available before the censorship report was posted.
Edelman said the center launched the research because few specifics
were available about Internet censorship in China, though China is
widely known to control its residents' access.
"People often ask us and ask others, what is it that's blocked in
China?" Edelman said. "For that kind of a person, we found that
producing a list of blocked sites was helpful." The availability of
sites in China were tested first by dialing from Berkman's offices
in Cambridge, Mass., the phone numbers of several modems used by
Chinese service providers.
When that stopped working, researchers turned to about
50 Chinese-based proxies, which are computers that can relay requests
for Web pages and make them appear to come from China.
Many of those proxies had been left open to the world inadvertently.
Tests were conducted from May to November.
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