New censorship on weibo

Back in October, we mentioned that weibo rolled out new semi-censorship. Apparently this is not enough. Now weibo has four different ways to censor keywords.

A. Explicit complete censorship

根据相关法律法规和政策,“[the blocked keyword]”搜索结果未予显示。

This translates into:

According to relevant laws, regulations and policies, search results for [the blocked keyword] can not be displayed.

Keyword example: 六四

Note: This is the good old way of censorship since the beginning of weibo.

B. Implicit complete censorship

抱歉,未找到“[the blocked keyword]”相关结果。

This translates into:

Sorry, no relevant results could be found for [the blocked keyword].

Keyword example: 江泽民

Note: This is a brand new form of censorship. Sina weibo used to admit what they censored. Now this message will also be shown to b keywords which actually have no results such as "dsfhadslfhadsljk".

C. Explicit semi-censorship

根据相关法律法规和政策,部分搜索结果未予显示。

This translates into:

According to relevant laws, regulations and policies, some of the search results can not be displayed.

Note: This method is employed around October as mentioned in the blog post.

D. Implicit semi-censorship

When you search for the keywords, only some selected results are returned. With a message at the button, stating

为了提供多样性结果,我们省略了部分相似微博,您可以点击查看全部搜索结果.。

This translates into:

In order to provide a diversity of results, we omitted some similar results. You could click here to view all results.

However, this message is shown to every keyword(except complete censored ones and those actually without any results). So you cannot determine the keyword is semi-censored from this message alone. When you click to view all results, sina weibo will append "&nodup=1" to the end of the search url. Now it will show the exact same message as b. Implicit complete censorship.

抱歉,未找到“[the blocked keyword]”相关结果。

This translates into:

Sorry, no relevant results could be found for [the blocked keyword].

Keyword example: 习近平

Note: This is a brand new way of censorship. It's really interesting to see how keywords are censored. For example, the censorship status of "习近平" went from a->not censored(?)->c->d->c. As I started to write this post, it was d, as I used web-archive to record it. When I'm writing this sentence 28 minutes later, however, it switched back to c. Another keyword "江泽民" went from a->b->a->b and stays at b. Our system could now detect censorship a, b(false positive of "dsfhadslfhadsljk" is inevitable), c. We might update our system to detect d if more keywords are censored this way in a prolonged time. Last but not least, this is merely censorship of searching on weibo. Much emphasis is also put on preventing users from posting sensitive weibo. Some keywords couldn't be posted on weibo in the first place, others will trigger a manual review by censors. Unfortunately, we haven't monitored that kind of censorship yet. But you could visit https://freeweibo.com/en to view recently censored posts on weibo.

Update: Now Sina has the 5th way of censoring keywords-7 day delay, please read Sina Weibo Enacts New "7 Day Delay" Function for Sensitive Terms Following 18th Party Congress for detail.

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Thu, Nov 30, 2017

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Tue, May 23, 2017

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And so last week the Chinese authorities determined that Twitter was the target. In particular, the authorities targeted the Twitter account for Guo Wengui (https://twitter.com/KwokMiles), the rebel billionaire who is slowly leaking information about corrupt Chinese government officials via his Twitter account and through his YouTube videos. Guo appeared to ramp up his whistle-blowing efforts last week and the Chinese authorities, in turn, ramped up theirs.

via https://twitter.com/KwokMiles/status/863689935798374401

Mon, Dec 12, 2016

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It’s been three years since Eric Schmidt proclaimed that Google would chart a course to ending online censorship within ten years. Now is a great time to check on Google’s progress, reassess the landscape, benchmark Google’s efforts against others who share the same goal, postulate on the China strategy and offer suggestions on how they might effectively move forward.

flowers on google china plaque

Flowers left outside Google China’s headquarters after its announcement it might leave the country in 2010. Photo: Wikicommons.

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Thu, Nov 24, 2016

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Tue, Jul 05, 2016

GreatFire.org 现在开始测试VPN在中国的速度和稳定性

在中国有一个普遍观念,如果你有一个可以使用的VPN,那么你应该保持沉默。就信息自由而言,这种观念的问题在于获取知识竟成了一种秘密。今天,我们推出一个项目,希望能够摧毁这种模型。

我们最新的网站,翻墙中心,目的在于实时提供那些能够在中国使用的翻墙方案的信息和数据。在2011年以来我们就已经开始收集在中国被屏蔽的网站,现在我们也将增加那些可用的VPN和其他翻墙工具。

我们发布翻墙中心主要有四个目的。

我们的首要目标是助长使用翻墙工具的国人的数量。通过分享我们这些工具的信息和数据,我们希望对更广泛的受众展示那些工具时可以使用的。

我们的第二个目标是通过带来工具性能的透明化来提升中国用户的翻墙体验。我们将会测试工具的速度(流行网站的加载速度)和稳定性(流行网站加载成功的程度)。

我们开发速度测试的目的是要真实反映用户的体验。当用户在网站测速时,浏览器在后台会从10个世界上最流行的网站上下载一些资源文件。根据Alexa排名,这些网站分别是Google, Facebook, YouTube, Baidu, Amazon, Yahoo, Wikipedia, QQ, Twitter and Microsoft Live。速度的结果是简单的计算下载文件文件的大小和下载所需的时间。我们同样也会验证下载的文件是否完整。如果文件的内容是错误的或者在40秒内无法完成下载,我们会标记为失败。这个数据被我们用来生成另一个重要指标-稳定性。

其他的速度测试工具仅仅是通过发送数据到它们自己的服务器来测量上传和下载的速度。这种数据无法反应用户的体验,因为正常的浏览器通常会频繁的发送一系列的请求(而不是上传或下载一个大文件)到许多的服务器,而不止是一个。

我们的第二个指标 - 稳定性 - 是其他的服务通常不会测试的。一个健康的互联网连接应该达到100%的稳定性,除非有人在测试中把网线拔了。但是在中国使用翻墙工具却不是这样。任何时候连接都有可能变得不稳定或十分缓慢。根据请求的大小,最终的地点和代理的方式,一些请求有可能会失败。比较服务的稳定性要比比较速度更加重要。

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我们郑重的邀请翻墙工具的开发者们向我们提供测试过程的反馈。我们的第三个目标是帮助这些开发人员改进他们的产品,让更多的选择适用于中国的顾客。此外,越多的工具可以工作,就意味着中国当局对翻墙的打击就会越难。

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我们的第四个目标就是要为GreatFire.org创造收益。目前GreatFire仍然依靠世界各地的热心人士和组织的捐款。我们希望减少对这些机构的依赖,并探寻GreatFire.org自给自足的道路。用户只需到翻墙中心就能购买任意一款我们目前在测试的付费工具。GreatFire将作为这些工具在中国的经销商,因此VPN供应商会给予我们每个零售的一部分。用户也不必在中国购买这些翻墙服务。

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