Adware

K Shaffer, Thank you for replying.

1. Clicking on the link to MalwareBytes for Mac did also create a pop-up fake Ad for an antiviral company, etc.
2. I didn't go there.
3. I got to MalwareBytes site directly - no thanks to new tabs created by the Adware.
4. Downloaded Malware Bytes for Mac, it when to my download folder, tried to drag it to my desktop, but with a single click it appeared to fly into my hard drive.
5. It hasn't worked. Same fake ads and fake warnings from Apple support keep popping up. Most of the time as a second tap that has a very large URL, but sometimes it appears as the primary website.
6. I wasn't able to find the MalwareBytes on my computer. The instructions from MalwareBytes.com says I should be able to search for it. Nor is it in my Apps or Library. I am thinking that the Adware blocked its installation. I may try installing it again.
7. As a warning to others I think I acquired this adware when I went directly to Adobe.com to download the latest edition of Flash (another fake pop-up had told me that mine was outdated - aargh). Gave it permission to download. Okay so far. But then while I was "blinking" or otherwise not paying attention a fake page again as me for permission to download. Which, in my deep regrets, did.
8. The popup ads like to appear when I go to the Apple Support page or when I am googling Adware.

Thank you K Shaffer & BDAqua,

After my second download of Malware Bytes for Mac I was able to find its launcher, both of them in fact. Maybe I was simply misspelling it in my searches. I don't know where the launcher was hiding. Anyway I was able to get the App and did a scan and it found16 Confirm Threats. 15 of them in my "user name" library dated 10/09/2019 or 10/10/2019. I previously & manually cleaned out the main library looking for 10/09/2019 and .plist (from reading other adware solutions in Apple Support).

I was able to trash the 15 Confirm Threats for by Malwarebytes for Mac and so far no more popups. I could not find the one named /Applications/.UpdateMac7.

Things learned:

1. Adware piggy-backed on legit download of Adobe Flash by inserting a fake page over the real one to get my permission.
2. TabAppDaemon or TabApp is adware. My original question. It was installed in Library/LaunchAgents on 10/09/2019
3. Most everything else went to /Users/"my user name"/Library on 10/10/2019
4. To get to /Users/"my user name"/Library, you need to do a Command-Shift-G and type in the pathway. Otherwise you won't be able to see what is there. (Also learned from reading through Apple Support response). Thank you.

I think I got it all, except /Application/.UpdateMac7

Posting to this forum has been one of the triggers for the pop-ups. So wish me luck.