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flomoyesterday at 11:02 PM1 replyview on HN

It's actually the extension injecting itself into the webpage, often to interact with it. (I imagine much of this is just looking for global ExtensionName objects.)


Replies

angoragoatsyesterday at 11:56 PM

Actually, the article is clear about what is happening technically, and it’s both. Chrome does, in fact, allow the page to make requests for resources stored in the extension bundle, and this is one of the two fingerprinting methods that the article describes.