Wednesday, May 27, 2026

Brave Browser is allowing some ads through even when blocked by DNS

I've just found that Brave Browser is allowing some ad domains through even though I have aggressive DNS and blocking on my network.

This can be proved by:

Running ad block tests such as https://adblock.turtlecute.org/

See that all Doubleclick ads are failing the block test as well as one of the Google ads domains.

Now turn OFF Brave Shields up, or set Brave to "Allow all trackers and ads", the page refreshes, and those categories are now totally blocked by DNS!

Brave must be using their own DNS blocking to allow domains like this on my network. Has anyone experienced this and have a workaround? I'm guessing maybe if I block whatever DNS server Brave uses might do the truck but haven't dove in yet.

I'm just shocked by this, Brave is obviously getting some google money here with these shenanigans, and this definitely reduces my trust in Brave, after happily converting from Firefox a few years ago.

submitted by /u/ThoughtConvict
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