silversurfer
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- Aug 17, 2014
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uBlock Origin 1.25 Now Blocks Cloaked First-Party Scripts, Firefox Only
uBlock Origin 1.2.5 has been released with a new feature that blocks first-party tracking scripts that use DNS CNAME records to load tracking scripts from a third-party domain and bypass filters.
www.bleepingcomputer.com
On February 19th, 2020, uBlock Origin 1.2.5 was released and allows the ad blocker to block these cloaked tracking scripts by performing a DNS lookup before loading them.
If the subdomain is a CNAME to a third-party host, then uBlock Origin will block the script from loading.
When cloaked first-party trackers are blocked, they will appear in the log as blue entries with the uncloaked domain shown underneath in a smaller font.
Unfortunately, the DNS API that allows DNS lookups is only available for Firefox, so Chrome users are out of luck and cannot take advantage of this feature. [....]
Uncloaked first-party trackers