this post was submitted on 04 Oct 2024
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Browsers with in built adblocker or system wide AdGuard.
DNS ad blockers are not sufficient to block all ads and often overly broad. So they have much higher rate of false positives and negatives compared to in-browser ad blockers. Differentiating between ads and useful content based on domain names will become more and more difficult. Both might use some url from the same cloud provider, and blocking those breaks a lot of stuff.
AdGuard is not a DNS blocker
It's both a browser extension and a DNS filter.
https://adguard-dns.io/kb/general/dns-filtering/#how-does-dns-filtering-work
Edit: It seems the apps can act as a VPN to filter traffic.