Many privacy extensions do protect some privacy on one hand, but then take away some on the other hand e.g. block trackers but collect other information on your

Many privacy extensions do protect some privacy on one hand, but then take away some on the other hand e.g. block trackers but collect other information on your browsing to sell (data business model). Using addons is thus risky. Firefox uses your browsing history to target new tab page ads to you. They get nearly $1mn/day from Google. They have done some good things in privacy with Yahoo, but they're overall probably not the best choice for one who cares about privacy and security (chromium is way ahead in security out-of-the-box than other browsers). Try giving the Epic Privacy Browser a spin!