I use UBlock Origin, Privacy Badger, Behave and Facebook Container with my Firefox. On only a few sites that I will have to disable UBlock and Privacy Badger. Walmart sent 15 port scans to my computer the last time I made a purchase from them on line. I filed a complaint and they did reply with an apology, but did not state they would stop doing that.
Port Scanning:
https://www.tunnelsup.com/browser-portscanning/
Firefox is the only browser that I know of that has this add-on (Behave), but I have not checked that other browsers would support this.