This kind of explains what can happen.
What We Know About Friday’s Massive East Coast Internet Outage
https://www.wired.com/2016/10/internet-outage-ddos-dns-dyn/
But I’m good though today.
Here is the comment I left at the linked site:
What motivates individuals to enjoy causing annoyance and even harm to others? When caught, some good old fashioned corporal punishment should be in order. Let all their victims have a swat at them with something big enough to hurt but not to cripple or kill. Of course after a thousand or so swats...