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“Localhost tracking” explained. It could cost Meta 32 billion.
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this post was submitted on 10 Jun 2025
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Privacy
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I found that odd, but reading the more technical write up (linked in the article) it seems Brave blocks localhost communication.
The Chrome proposal references a single use case. I've never seen a website that sets up my local devices, but is this a new thing?
Why did localhost not get blocked earlier? This seems like a huge hole browsers have ignored for years.
Also the DuckDuckGo exception doesn't make sense to me. Does DuckDuckGo have Facebook trackers on it to begin with? Whatever site DuckDuckGo sends you to, if they have the trackers, you'll get tracked.
On pc jetbrains toolbox uses localhost to login via browser for some reason, which was blocked by one of my extensions