3 ms·
This is exactly why almost all advertising companies now offer CNAME cloaking support or a similar technique where their ad server is aware of the DNS domain th
by cookiengineer 5y ago
This is exactly why almost all advertising companies now offer CNAME cloaking support or a similar technique where their ad server is aware of the DNS domain that it was "called by" and serves ads accordingly.
This way stupid clients just follow the domain and think it's subdomain.publisher.tld and dont care about the CNAME pointer to the advertising tracker.
And you've assumed correctly: This is a cat and mouse game, and if you take a closer look at all those adblocker lists you'll identify lots and lots of randomized subdomains that are there just for the purpose of temporary obfuscation.