In theory. But it's not impossible for a nefarious browser to send it along as a... | Hacker News

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		dreamcompiler on Dec 1, 2019 \| parent \| context \| favorite \| on: The world needs more search engines In theory. But it's not impossible for a nefarious browser to send it along as an HTTP header. Or a nefarious AP: https://news.ycombinator.com/item?id=21463266

jefftk on Dec 1, 2019 [–]

Your link describes the Milan airport captive portal putting the MAC in the URL (don't do this). The referrer is automatically attached to any requests the page makes. This is a comically broken configuration, not something at all common.

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