Intercepting new Image().src requests

Maybe you're an attacker who sneaked in a little JavaScript to an unsuspecting site and would like to, well, sneak. Or maybe you want to know what exactly all these third-party analytics scripts are "calling home". Or maybe just for fun - wouldn't it be cool to intercept and log all requests made with new Image().src It's a common pattern. A ping. Collect all the data then send it like: new Image(

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ES Proxyを使って`Image`のFake版を作成する話。