What can plugging in a USB Flash Drive to your computer do? Well, it can cause millions of dollars of damage and potentially can defunct a whole nation! All this was done by Cyber warriors/criminals. That’s the most sophisticated software probably ever written in the history. It targets Iranian nuclear enrichment facility and sabotage it stealthy. This involves utilizing 4-zero day bugs, stealing most secured private keys from well known companies, and a lot more tech adventures.
It is a real cyber war and reminds that any smart device in the world can be compromised.
Wiki: https://en.wikipedia.org/wiki/Stuxnet
Documentary: https://watchdocumentaries.com/zero-days/