[serf]

>It's funny your warning about QR codes goes onto warn about PDF exploits. Yet you clicked the link to this article, by your own definition opening you up to "a whole different world of possible exploitations via whatever file is being returned". It's the nature of the internet to follow links, but our updated browsers keep us safe from exploits.

you really don't know what they did.

In the time of containerized OSs and virtualized-everything it's silly to guess.