Most people are familiar with the notion of an adblocker – a program that blocks ads from showing. But they may not, however, be entirely familiar with how adblockers work or what the best kind of adblockinger for their use might be. Adblockers entirely block the request to the adserver they rewrite the page before its rendered to replace the request that would otherwise be made with a placeholder. This is the best approach because no spurious traffic is generated it keeps the network traffic to a minimum.”]
Source: https://informationsecuritybuzz.com/articles/adblocking-and-adblocker-blocking/