What does uBlock Origin actually block in your browser?

uBlock Origin (from ublock[dot]org) is known for blocking banners and pop-ups, but users are often unaware of the invisible tracking and telemetry elements it filters to protect privacy in the background.

AdBlock Network perimeter filtering vs. uBlock

Just like uBlock, AdBlock Network goes beyond the visible banner. The local firewall is updated via read-only asynchronous requests to multiple independent endpoints. Its Address layer halts requests from ad servers, web trackers, analytics cookies, and cryptominers directly at the network level.