// supercookies
what is CNAME cloaking?
The tracker hides behind a first-party subdomain (analytics.example.com) that CNAMEs to the tracker host. To the browser it is first-party, so its cookies dodge third-party-cookie blocking and ride along as same-site state.. Fast-decaying: browser mitigations land release-to-release; asOf 2026-06-15. Distilled from the richards supercookies catalog.
source capture as of 2026-06-15
in the benchmark
CNAME cloaking is tracked as part of the supercookies taxonomy. see how tracked tools score against it on the capability matrix.