C:\Program Files\McAfee Security Scan\3.11.968
I also examined the Webroot Mobile for Android web page, and there wasn't any mention or link to any McAfee anything.
Also, the WSA Complete for Windows running on my PC didn't do anything during the McAfee install and security scan.
Does anyone have any idea why and how this happened?
Best answer by TripleHelix
For years McAfee Security Scan has been bundled with Adobe Flash and Reader and other products so you have to be careful when installing programs. https://get.adobe.com/flashplayer/ so I would call it a PUA/PUP or just plain Adware.
See here: https://kc.mcafee.com/corporate/index?page=content&id=KB68706 and here: https://forums.adobe.com/thread/2224689