Good remarks, and align with what I'm discovering. I looked at turning on Windows Defender, but as long as I have Malwarebytes it won't do it's deep protection thing, though it will run regular scans. I played with it and gave it more information to pay more attention to other kinds of threats - my information on the Dark Web, etc., but I have a separate account (not loaded on the computer) to do that.
I didn't put in a free antivirus, I did the Windows Defender thing to see what was up with it.
In my various attempts to try to reach the AT&T version I followed a link to the McAfee site and it asked for my email address, but I couldn't get it to link to AT&T. McAfee sent an email this morning telling me my free trial is up and running - what bollox. Now I'll be pestered by the company until I get them to go away. I'll make one more effort to contact AT&T Tech support when I have a free hour later this evening.
I kind of miss the blue line that arrived on the screen any time I contacted a banking institution. You couldn't use another browser to connect to another institution at the same time, but that was ok. Only a couple of times did I have to backout of where I was and go refer to the other place before opening the secure browsing again. Yes, it's supposed to always be secure, and the green thing no doubt pops up any time the banking URLs give it the sign - but it did do something that seemed helpful.
Now to keep out the rest of the crap that's out there that Malwarebytes might not be set up for.