Pale Moon is lacking security wise, maybe waterfox is a more suitable alternative. Also Waterfox author plans to fund a startup to fork the firefox to support XUL and go from there:
https://www.ghacks.net/2017/03/13/waterfox-dev-has-big-plans...
Re:Intelligent Tracking Prevention
by squarefoot on Friday June 09, 2017 @06:15AM
(#14520376)
Thanks for the info, I never heard about that project before.
https://www.palemoon.org/
https://addons.palemoon.org/addon/crush-those-cookies/
https://addons.palemoon.org/incompatible/