China ISP Ad Injection

By Xah Lee. Date:

It appears, that China is doing ISP-level ad-blocking and ad-injection.

Following are screenshots of xahlee.info, of the page: Guide to Keyboard Key Switch Mechanisms. Screenshots taken in Hangzhou, China, taken on .

xahlee.info is hosted in USA, and main audience is North American. xahlee.info runs Google Ads, and also amazon.com ads.

In the following screenshots, the square ads on the lower corner is foreign, likely injected by China's ISP.

china isp ad injection 2015-05-25 2
China ISP Ad Injection
china isp ad injection 2015-05-25 1
China ISP Ad Injection
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China ISP Ad Injection

Articles about ISP-level Ad injection:

[How a banner ad for H&R Block appeared on apple.com—without Apple's OK. Someone, somewhere is injecting banner ads into webpages on the sly. By Nate Anderson. At http://arstechnica.com/tech-policy/2013/04/how-a-banner-ad-for-hs-ok/ , accessed on 2015-07-24 ]

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