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What would stop people using a CNAME record to point ads.example.com to a third party ad server? I don't think there would be a way to use cookies to track peop
by _-david-_ 6y ago
What would stop people using a CNAME record to point ads.example.com to a third party ad server? I don't think there would be a way to use cookies to track people across different sites, but the ad servers could still use ip addresses and browser fingerprinting to check if its the same user.
- FridgeSeal 6y agoPiHole and uBlock origin support so called “deep CNAME inspection” that defeats approaches like that.
- blibble 6y agopretty easy to defeat that CNAME inspection: switch to ANAMEs everything will end up pointing at some random AWS IP address, and you can't filter that