Radioactivity is probable, but not likely. Locally we were advised not to eat sheep for about a decade because of ~an incident~ to do with radioactive material.

Hacking is something that is getting more and more likely by the day. First, WannaCry infects the world over and knocks out a hospital system. What's next? Pacemakers going offline? Insulin pumps being hacked? Hell, cars can already be hacked from a distance, internet connected cars aren't raising a risk factor by much, aside from it lengthening the distance at which you can do the hack.