Wednesday, January 13, 2010

A new approach to China

1/12/2010 03:00:00 PM
Like many other well-known organizations, we face cyber attacks of varying degrees on a regular basis. In mid-December, we detected a highly sophisticated and targeted attack on our corporate infrastructure originating from China that resulted in the theft of intellectual property from Google. However, it soon became clear that what at first appeared to be solely a security incident--albeit a significant one--was something quite different.

First, this attack was not just on Google. As part of our investigation we have discovered that at least twenty other large companies from a wide range of businesses--including the Internet, finance, technology, media and chemical sectors--have been similarly targeted. We are currently in the process of notifying those companies, and we are also working with the relevant U.S. authorities.

Second, we have evidence to suggest that a primary goal of the attackers was accessing the Gmail accounts of Chinese human rights activists. Based on our investigation to date we believe their attack did not achieve that objective. Only two Gmail accounts appear to have been accessed, and that activity was limited to account information (such as the date the account was created) and subject line, rather than the content of emails themselves.

Third, as part of this investigation but independent of the attack on Google, we have discovered that the accounts of dozens of U.S.-, China- and Europe-based Gmail users who are advocates of human rights in China appear to have been routinely accessed by third parties. These accounts have not been accessed through any security breach at Google, but most likely via phishing scams or malware placed on the users' computers.

We have already used information gained from this attack to make infrastructure and architectural improvements that enhance security for Google and for our users. In terms of individual users, we would advise people to deploy reputable anti-virus and anti-spyware programs on their computers, to install patches for their operating systems and to update their web browsers. Always be cautious when clicking on links appearing in instant messages and emails, or when asked to share personal information like passwords online. You can read more here about our cyber-security recommendations. People wanting to learn more about these kinds of attacks can read this U.S. government report (PDF), Nart Villeneuve's blog and this presentation on the GhostNet spying incident.

We have taken the unusual step of sharing information about these attacks with a broad audience not just because of the security and human rights implications of what we have unearthed, but also because this information goes to the heart of a much bigger global debate about freedom of speech. In the last two decades, China's economic reform programs and its citizens' entrepreneurial flair have lifted hundreds of millions of Chinese people out of poverty. Indeed, this great nation is at the heart of much economic progress and development in the world today.

We launched Google.cn in January 2006 in the belief that the benefits of increased access to information for people in China and a more open Internet outweighed our discomfort in agreeing to censor some results. At the time we made clear that "we will carefully monitor conditions in China, including new laws and other restrictions on our services. If we determine that we are unable to achieve the objectives outlined we will not hesitate to reconsider our approach to China."

These attacks and the surveillance they have uncovered--combined with the attempts over the past year to further limit free speech on the web--have led us to conclude that we should review the feasibility of our business operations in China. We have decided we are no longer willing to continue censoring our results on Google.cn, and so over the next few weeks we will be discussing with the Chinese government the basis on which we could operate an unfiltered search engine within the law, if at all. We recognize that this may well mean having to shut down Google.cn, and potentially our offices in China.

The decision to review our business operations in China has been incredibly hard, and we know that it will have potentially far-reaching consequences. We want to make clear that this move was driven by our executives in the United States, without the knowledge or involvement of our employees in China who have worked incredibly hard to make Google.cn the success it is today. We are committed to working responsibly to resolve the very difficult issues raised.

Posted by David Drummond, SVP, Corporate Development and Chief Legal Officer

Tuesday, January 20, 2009

I came back

We're sorry, the blog was not updated for a long time.I most often write in Chinese blog,Almost forgot there is this English blog.

Thursday, August 14, 2008

To infinity and beyond? No!

Sent to you by xingxing via Google Reader:

via Google Webmaster Central Blog by Maile Ohye on 8/5/08
When Googlebot crawls the web, it often finds what we call an "infinite space". These are very large numbers of links that usually provide little or no new content for Googlebot to index. If this happens on your site, crawling those URLs may use unnecessary bandwidth, and could result in Googlebot failing to completely index the real content on your site.

Recently, we started notifying site owners when we discover this problem on their web sites. Like most messages we send, you'll find them in Webmaster Tools in the Message Center. You'll probably want to know right away if Googlebot has this problem - or other problems - crawling your sites. So verify your site with Webmaster Tools, and check the Message Center every now and then.



Examples of an infinite space

The classic example of an "infinite space" is a calendar with a "Next Month" link. It may be possible to keep following those "Next Month" links forever! Of course, that's not what you want Googlebot to do. Googlebot is smart enough to figure out some of those on its own, but there are a lot of ways to create an infinite space and we may not detect all of them.


Another common scenario is websites which provide for filtering a set of search results in many ways. A shopping site might allow for finding clothing items by filtering on category, price, color, brand, style, etc. The number of possible combinations of filters can grow exponentially. This can produce thousands of URLs, all finding some subset of the items sold. This may be convenient for your users, but is not so helpful for the Googlebot, which just wants to find everything - once!

Correcting infinite space issues

Our Webmaster Tools Help article describes more ways infinite spaces can arise, and provides recommendations on how to avoid the problem. One fix is to eliminate whole categories of dynamically generated links using your robots.txt file. The Help Center has lots of information on how to use robots.txt. If you do that, don't forget to verify that Googlebot can find all your content some other way. Another option is to block those problematic links with a "nofollow" link attribute. If you'd like more information on "nofollow" links, check out the Webmaster Help Center.

Written by Torrey Hoffman, Webmaster Tools team

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How to start a multilingual site

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via Google Webmaster Central Blog by Chark on 8/7/08
Have you ever thought of creating one or several sites in different languages? Let's say you want to start a travel site about backpacking in Europe, and you want to offer your content to English, German, and Spanish speakers. You'll want to keep in mind factors like site structure, geographic as well as language targeting, and content organization.

Site structure
The first thing you'll want to consider is if it makes sense for you to buy country-specific top-level domains (TLD) for all the countries you plan to serve. So your domains might be ilovebackpacking.co.uk, ichlieberucksackreisen.de, and irdemochilero.es.es. This option is beneficial if you want to target the countries that each TLD is associated with, a method known as geo targeting. Note that this is different from language targeting, which we will get into a little more later. Let's say your German content is specifically for users from Germany and not as relevant for German-speaking users in Austria or Switzerland. In this case, you'd want to register a domain on the .de TLD. German users will identify your site as a local one they are more likely to trust. On the other hand, it can be pretty expensive to buy domains on the country-specific TLDs, and it's more of a pain to update and maintain multiple domains. So if your time and resources are limited, consider buying one non-country-specific domain, which hosts all the different versions of your website. In this case, we recommend either of these two options:
  1. Put the content of every language in a different subdomain. For our example, you would have en.example.com, de.example.com, and es.example.com.
  2. Put the content of every language in a different subdirectory. This is easier to handle when updating and maintaining your site. For our example, you would have example.com/en/, example.com/de/, and example.com/es/.
Matt Cutts wrote a substantial post on subdirectories and subdomains, which may help you decide which option to go with.

Geographic targeting vs. Language targeting
As mentioned above, if your content is especially targeted towards a particular region in the world, you can use the Set Geographic Target tool in Webmaster Tools. It allows you to set different geographic targets for different subdirectories or subdomains (e.g., /de/ for Germany).

If you want to reach all speakers of a particular language around the world, you probably don't want to limit yourself to a specific geographic location. This is known as language targeting, and in this case, you don't want to use the geographic target tool.

Content organization
The same content in different languages is not considered duplicate content. Just make sure you keep things organized. If you follow one of the site structure recommendations mentioned above, this should be pretty straightforward. Avoid mixing languages on each page, as this may confuse Googlebot as well as your users. Keep navigation and content in the same language on each page.

If you want to check how many of your pages are recognized in a certain language, you can perform a language-specific site search. For example, if you go to google.de and do a site search on google.com, choose the option below the search box to only display German results.
If you have more questions on this topic, you can join our Webmaster Help Group to get more advice.

Posted by Charlene Perez and Juliane Stiller, Search Quality Team

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It's 404 week at Webmaster Central

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via Google Webmaster Central Blog by Maile Ohye on 8/11/08
This week we're publishing several blog posts dedicated to helping you with one response code: 404.

Response codes are a numeric status (like 200 for "OK", 301 for "Moved Permanently") that a webserver returns in response to a request for a URL. The 404 response code should be returned for a file "Not Found".

When a user sends a request for your webpage, your webserver looks for the corresponding file for the URL. If a file exists, your webserver likely responds with a 200 response code along with a message (often the content of the page, such as the HTML).

200 response code flow chart


So what's a 404? Let's say that in the link to "Visit Google Apps" above, the link is broken because of a typing error when coding the page. Now when a user clicks "Visit Google Apps", the particular webpage/file isn't located by the webserver. The webserver should return a 404 response code, meaning "Not Found".

404 response code flow chart


Now that we're all on board with the basics of 404s, stay tuned 4 even more information on making 404s good 4 users and 4 search engines.

Written by Maile Ohye, Developer Programs Tech Lead

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Farewell to soft 404s

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via Google Webmaster Central Blog by Maile Ohye on 8/12/08
We see two kinds of 404 ("File not found") responses on the web: "hard 404s" and "soft 404s." We discourage the use of so-called "soft 404s" because they can be a confusing experience for users and search engines. Instead of returning a 404 response code for a non-existent URL, websites that serve "soft 404s" return a 200 response code. The content of the 200 response is often the homepage of the site, or an error page.

How does a soft 404 look to the user? Here's a mockup of a soft 404: This site returns a 200 response code and the site's homepage for URLs that don't exist.



As exemplified above, soft 404s are confusing for users, and furthermore search engines may spend much of their time crawling and indexing non-existent, often duplicative URLs on your site. This can negatively impact your site's crawl coverage—because of the time Googlebot spends on non-existent pages, your unique URLs may not be discovered as quickly or visited as frequently.

What should you do instead of returning a soft 404?
It's much better to return a 404 response code and clearly explain to users that the file wasn't found. This makes search engines and many users happy.

Return 404 response code



Return clear message to users



Can your webserver return 404, but send a helpful "Not found" message to the user?
Of course! More info as "404 week" continues!

Written by Maile Ohye, Developer Programs Tech Lead

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Video units more widely available

by Inside AdSense Team

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via Inside AdSense by Inside AdSense Team on 8/13/08
We've heard your feedback about the availability of video units, so we've expanded the languages and geographies where they're supported. We've added French, German, and Spanish to our list of supported languages, and also Brazil, Germany, India, and Mexico to the list of supported countries. To help you determine whether you'll be able to use video units, consider these two questions:
  1. Do you have an English, French, German, Japanese, or Spanish-language AdSense account?

  2. Are you located in one of the following countries?

    Australia, Brazil, Canada, France, India, Ireland, Italy, Germany, Japan, Mexico, Netherlands, New Zealand, Poland, Spain, United Kingdom, United States
If you answered 'yes' to both questions, then video units are available to you. Sign in to your AdSense account and visit your AdSense Setup tab to get started. After linking your YouTube and AdSense accounts, you'll be able to customize and embed the video player into your website, and choose between having videos automatically targeted to your content or manually selecting content categories and content providers. Companion and text overlay ads will appear with your videos, and you'll generate earnings for valid clicks and impressions on those ads.

You can find more information about video units in our Help Center, and as always, please feel free to leave us a comment with your video unit feedback. We'll be sure to keep you posted if video units become available in any additional countries or languages.

Posted by Arlene Lee - AdSense Publisher Support

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