Online Censorship In China

GreatFire.org brings transparency to the Great Firewall of China. We have monitored blocked websites and keywords since 2011.

Latest Stats

Monitoring 963 Alexa Top 1000 Domains:148 are blocked in China
Monitoring 38907 Domains:4808 are blocked in China
Monitoring 16826 Google Searches:16704 are blocked in China
Monitoring 790 Google Sites:687 are blocked in China
Monitoring 16210 HTTPS:4213 are blocked in China
Monitoring 17301 IP Addresses:8166 are blocked in China
Monitoring 208673 URLs:61502 are blocked in China
Monitoring 26153 Weibo Searches:2483 are blocked in China
Monitoring 1209 Wikipedia Pages:858 are blocked in China

Latest News

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Wed, Jul 15, 2015

LinkedIn: technological and financial giants; but morally pygmies

When LinkedIn decided to create a China-hosted version of its website in February, 2014, it made a decision to compromise the company's values in the pursuit of the dollar.

It's important to note that before LinkedIn launched LingYing (the local version of the site), LinkedIn was already active in China. By their own account, they had four million registered users (with little marketing effort), a Chinese-language interface and China-based clients who were buying recruitment ads on the platform (the major source of their revenue). The site had been blocked by the authorities for one 24-hour period but otherwise was always accessible.

So why was it necessary for LinkedIn to create a local entity in China? With a local entity the company would be able to issue official receipts in RMB, making it more convenient for local companies to buy advertising on the site. A local entity also makes it easier to secure marketing deals to promote LingYing in China.

But perhaps the biggest appeal in creating a local entity for LinkedIn is that it would be among the few foreign internet companies who could cosy up with Lu Wei and the Cyberspace Administration of China (CAC). Having that kind of a relationship with CAC surely helps the business and those who are associated with the company.

Sat, Apr 04, 2015

CNNIC censors news about their own statement

On April 1, 2015 Google announced that they will no longer recognize the CNNIC Root and EV (extensive validation) certificate authorities (CAs).

On April 2, 2015 Mozilla concluded that CNNIC’s behaviour in issuing an unconstrained intermediate certificate to another company was ‘egregious practice’ and that Mozilla products would no longer trust any certificate issued by CNNIC’s roots. Mozilla also published a more detailed report about their actions.

After unauthorized digital certificates for several Google domains were exposed by Google and Mozilla on March 23, 2015, CNNIC censored any mention of these posts. CNNIC is not only a certificate authority, they are also China’s online censorship apparatus. CNNIC was, is and will continue to practice internet censorship.

 

News about the April 1 and 2 annoucements has again been censored on social media and also on traditional media in China.

Below is a screenshot of Weibo posts about these announcements.

 

Tue, Mar 31, 2015

Chinese authorities compromise millions in cyberattacks

The Great Firewall has switched from being a passive, inbound filter to being an active and aggressive outbound one. This is a frightening development and the implications of this action extend beyond control of information on the internet. In one quick movement, the authorities have shifted from enforcing strict censorship in China to enforcing Chinese censorship on internet users worldwide.

Fri, Mar 27, 2015

CNNIC censored Google and Mozilla’s posts about CNNIC CA

This week, Google found unauthorized digital certificates for several Google domains, the root CA of which is CNNIC. Google and Mozilla both publicly disclosed this security incident and published blog posts(Google, Mozilla). However, Chinese translations of Google’s and Mozilla's blog posts were censored on the Chinese Internet.

  • William Long is a prominent Chinese blogger on IT and tech. He translated Google’s security post without adding any personal opinions. The Chinese blogpost ranked #1 when searching CNNIC MITM in Chinese on Google and Baidu. He tweeted that he received a phone call from propaganda department demanding the post to be removed immediately. The post http://www.williamlong.info/archives/4183.html was deleted. Google cache is still available.

Wed, Mar 25, 2015

Evidence shows CNNIC and CAC behind MITM attacks

Since 2013, we have repeatedly called on major software vendors to revoke CNNIC-issued certificates. Most notably, we raised this issue when we reported on the Cyberspace Administration of China’s (CAC) man-in-the-middle (MITM) attacks on Google, Microsoft’s Outlook, Apple, Yahoo and Github. Mainstream media have reported about these security vulnerabilities before and on March 24, Ars Technica reported on Google’s announcement that they have definitive evidence that CNNIC (China Internet Network Information Center) was behind a new MITM attack on Google.

From our October, 2014 blog post:

Thu, Mar 19, 2015

We are under attack

We are under attack and we need help.

Likely in response to a recent story in the Wall Street Journal (WSJ), we’ve experienced our first ever distributed denial of service (DDoS) attack. This tactic is used to bring down web pages by flooding them with lots of requests - at the time of writing they number 2.6 billion requests per hour. Websites are not equipped to handle that kind of volume so they usually “break” and go offline.

This kind of attack is aggressive and is an exhibition of censorship by brute force. Attackers resort to tactics like this when they are left with no other options.

We are not equipped to handle a DDoS attack of this magnitude and we need help. Some background:

  • The attack started on March 17 and we are receiving up to 2.6 billion requests per hour which is about 2500 times more than normal levels.

Thu, Mar 12, 2015

Collateral Freedom and the not-so-Great Firewall

Recognizing that the authorities have been hesitant to crackdown on our method of circumvention, we have accelerated our expansion of the development of collateral freedom, in three key areas.

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