I am currently analysing my page connections and I want to block some tracking scripts and other external URL calls in my network monitor inside Chrome\'s developer tools.>
Well, i have been looking for an answer for this too, as I had this issue of choices by counterfeit, and nothing seemed to work for me. But then I tried to analyze the requests and other things until I figured out, that there was this site which was loading ads onto my pages and redirecting me to advertisements. And also changing the google search bar on new tabs to some unknown search engine. I was able to temporarily block the request on one page. but after opening a new tab, the ads would appear again.
So googling for request blocker, I came up with a chrome extension "HTTP Request Blocker" and added the address which was causing all the crazy ads, has now solved the problem fully.
I hope it will be of help to you too or anyone else.