Siber Attacks in the United States

i knot i'd rather be safe tand y. Here's how i think it would happen if there were to be a siber attack in the united states. I could cause a very, very significant mass disruption event and possibly a lot of death. This kind of stuff has already been robed, and they're feeling it out already. Not suggesting just the russians, but others too. Do you ever hear this story? It's in wired magazines from february of last year. Andy greenberg, a hacker tried to poison a florida city's water supply. Cias say the attack are up sodium hydrooxide levels in the oldsmore florida water supply