You know, we have an entire US Gov't agency to deal with exactly this sort of threat.
CISA (Cybersecurity and Infrastructure Security Agency) https://www.cisa.gov/

They have a $3 BN budget and 3,374 employees (as of 2017)

I didn't want to read that CISA wasn't working on this infrastructure attack UNTIL the FBI called them!
https://www.cybersecuritydive.com/ne...earing/600029/

CISA hasn't even written a press release to post on their own web site addressing this attack!

Richard