I've used Firefox for years because Chrome is Big Brother and IE is crap, and both are more focused on serving web owners and ad providers than the user who installs them.
Looks like Firefox is circling the drain now too. First https://mashable.com/2017/12/16/mr-robot-looking-glass-mozilla-firefox-backlash/ and now https://www.theregister.co.uk/2018/01/29/firefox_to_show_occasional_sponsored_story_in_ads_test/
Looks like I need to start researching the smaller browsers. Any suggestions for something easy to lock down and highly configurable?