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by sanqui 4102 days ago
You can serve an X-Frame-Options:"DENY" (or "SAMEORIGIN") header to prevent browsers from loading the iframes.
1 comments

But this is a response header, so server shoud respond and that is the goal of attack. Browser doesn't send any request headers saying that site is opened in the iframe.
Sure, but at least the browser won't render the page, so it won't download the additional content like images and scripts. It's partial mitigation.