Question comes to mind when utilizing a Browser and what it is doing with different requests.
Lets say utilizing Firefox, have Home Page set to Google.com, Search Engine set to DuckDuckGo.com, and then have various saved Bookmarks.
Upon opening Firefox, it goes directly to the Google on Home page – has it sent anything to Google to snoop on?
Then perform a Search which utilizes DuckDuckGo which then delivers the selected website – has anything been sent to Google?
Then back at Home Page, select a stored Bookmark – is Google or DuckDuckGo been utilized or sent anything?
Finally, when on a website and select a link or a different Bookmark – is Google or DuckDuckGo been utilized? How can you tell?