What is the best browser focused on security ?

Hey everyone, what is the best browser focused on security ?

I'm well aware that I should use multiple browsers for dofferent tasks, the thing is what browser is focused on security (for example a browser where I could login for a banking site, etc.) ?

This question goes both for mobile (Android) and desktop.

I've used vanilla Firefox with some settongs tweaked and installed uBlock Origin to block ads. However I've read that Firefox on mobile isn't that good …

browser privacy security what is