He can hires mercenaries and do task x. Or kidnap person y to force person z to do bad thing k.
k can be:
- if scientist: spread a very dangerous virus
- if some train operator: do some incidents
- if some it guy: delete all database or corrupt slowly or add backdoors. Then ai could delete financial data. More money more chances to do damage.
So once we establish money equals human work. Means anything bad can happen. Put a bad chemical in the water supply. Release a virus/toxin.
If you want deadly one off, they’d put a toxin you wouldn’t die in 1 day but in 1 year. So in one year everyone has it and all die even if they stop drinking.
You can be creative, I think there are too many ways to do it. I can’t understand why people can’t see it so easily.