My stupid self was downloading freeware. I should also state I had no antivirus running. Not a promising combination. Whether antivirus would have stopped it is uncertain. I'll also state I have spent the better part of a decade downloading freeware for whatever purpose and never had problems. Not stating it was from that for certain, but I was in the process of that task when the problems arose so. I can say with certainty it wasn't internet pron <shifty eyes>!
The Repairable error is not having antivirus protection. I download (mostly Opensource) freeware quite a bit and yes, my AV has caught some issues.