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Bloomberg

Users of the WeChat instant messaging platform can have their content censored even if they leave China or switch to an overseas phone number, according to a research group.
WeChat accounts registered with a mainland China-based phone number have keywords filtered out or messages blocked anywhere in the world as long they keep the same user name, according to a study by the University of Toronto’s Citizen Lab.
Accounts created outside the mainland, such as through carriers in Hong Kong or the US do not face the same restrictions, it said.
“The idea that you can’t escape a censorship system imposed on you at the time of registration is a troubling one,” said Jason Ng, a research fellow at the Citizen Lab.
The dual systems are crucial to understanding how Tencent Holdings can expand China’s most-popular message service overseas while still complying with domestic government controls on information.
Facebook’s ‘censorship tool may not open doors’ in China
With 846 million active users on WeChat, the company scrapes news posts deemed sensitive and blocks private texts containing certain words in both one-on-one and group chats, Citizen Lab’s research on Thursday showed.
Tencent said it complies with local laws and regulations in the countries where it operates.
“WeChat has and will always adhere to Tencent’s core mission to create value,” the company said in a statement on Thursday.
The researchers tested 26,821 keywords that have been blocked on other websites, including Weibo Corp and YY Inc. 
They found that 174 words and expressions, such as “Free Tibet” and “ISIS Crisis”, triggered censorship.
If those words are detected by WeChat servers in China, the message will not be sent.
More words are monitored in group chats than in one-to-one messages, most probably because of the capability to reach a larger number of users, the study showed.
Some words originally blacklisted were found accessible later and new ones are constantly added, the research found.
“In recent years, WeChat has faced increased regulatory pressures,” the report said. “This strict regulatory environment has led to suspicions that communications on WeChat may be monitored.”
Tencent also stopped notifying users if their messages were intercepted, making its operations less transparent, said Lotus Ruan, a researcher at Citizen Lab.
WeChat allegedly censoring photos from Hong Kong protests
Texts sent from overseas users to a Chinese account simply would not appear on the receivers’ app.
Tencent is part of a growing number of companies succumbing to censorship to operate in jurisdictions like China.
Line Corp has also filtered keywords for Chinese users, according to a Citizen Lab report in 2014. Facebook is said to be developing a system to scrape content deemed inappropriate by Chinese regulators in order win access back to the market, The New York Times reported last week.


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Censorship in China

How to avoid getting your WeChat messages censored both in and outside China

The research into the use of WeChat outside the mainland was carried out by researchers at the University of Toronto in Canada. Photo: Reuters

WECHAT -Censorship on WeChat. SCMP Pictures (UNDATED HANDOUT)

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Accounts registered with mainland-based numbers have keywords filtered or blocked anywhere in the world as long as they keep their user names


WeChat

Explainers: Technology