互联网广告商和第三方Cookie - 澄清？ [英] Internet Advertisers and Third-Party Cookies - clarification?

问题描述

我阅读了这个问题，了解第三这是我已经知道的一个主题：

I've read this question about how third party cookie are set , which is a subject I already know :

它可以通过三种方式完成：

it can be done via three ways :

• 脚本（ application / javascript ）mime类型（在服务器端生成），也可以设置cookie。 （以及脚本响应）。

• Script (application/javascript)mime type ( which is generated at server side) which can also set cookie. ( along with the script response).

img 链接< IMG href =http：//www.advertiser.exmaple/add.cgi？source = example.com& user = 1032354>

表单提交到iframe（for safari）

form submission to an iframe ( for safari)

此外，这个答案很好地解释了。

Also , this answer explain it pretty well.

问题：

我在 example.com 中点击了眼镜

如何知道它应该向我显示关于眼镜的广告？ img / 脚本 / 向iframe提交表单正在为example.com上的每次点击请求（眼镜的查询字符串值）？ （我几乎不相信）

How does advertiser.com knows it should show me ads about glasses ? does an img / script / form submission to an iframe is being requested (with query string value for glasses) for each click on example.com? (I hardly believe so)

（即使如此，也就是说 advertiser.com 和 example.com 必须同意项目＃447 是眼镜 .. ..他们都共享一个db？--- huh？）

(even if so , it means that both advertiser.com and example.com has to agree that item #447 is glasses....do they both share a db ? ---huh ?)

它是如何工作的？

推荐答案

当您访问 http://www.example.com/glasses？ >，请使用 Referer：http://www.example.com/glasses HTTP标头请求从此网页加载的资源（图片，脚本等）。这样，广告客户就知道您正在使用哪个网页。当然，他们可以分析关键字的URL，或者请求和分析HTML，但更多的时候他们已经知道他们需要的所有。他们知道 example.com 使用他们的广告，因此他们经常在网站地图的帮助下抓取网站。

When you visit http://www.example.com/glasses, the resources loaded from this page (images, scripts, etc.) are requested with the Referer: http://www.example.com/glasses HTTP header. This way the advertiser knows which page you are on. Of course they can analyze the URL for keywords, or make a request and analyze the HTML, but more often they already know all they need. They know example.com uses their ads, so they often crawl the website with the help of a sitemap.

如果 标题（所有人都可以在浏览器中停用），广告客户可以使用JavaScript获取网址，该网址可以通过多种方式发送跨原始请求，包括CORS。该脚本还可以通过分析当前网页的HTML来即时获取正确的关键字。

If the Referer header is not sent (everyone can disable it in their browser), the advertiser can get the URL using JavaScript, which can send cross-origin requests in various ways, including CORS. The script can also get the right keywords instantly by analyzing current page's HTML.

拥有关键字后，广告客户的软件会决定您应该看到哪些广告。顺便说一下，他们会在他们的数据库中创建您的个人资料，并为您设置一个带有您的ID的Cookie，以跟踪您的偏好设置和行为，并在未来向您展示更多个性化广告。

Having the keywords, the advertiser's software will decide which ads you should see. And, by the way, they will create your profile in their database and set you a cookie with your ID, to track your preferences and behavior - and show you more personalized ads in the future.

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