Greetings from a friend in Canada, staying in Toronto during the cleanup in New York:
...to find out that THE ENTIRE BANK OF MONTREAL BROKE! all cards, machines, phone lines, computer systems. Everything. the lady managing the line of customers leaned over to me and said 'we're giving out cash on the honour system. we have to trust each other now.'
You may now commence teasing Canadians about our hippie commie nonsense that will never work in real life.
ssh+2FA to all your machines, anywhere, without opening firewall ports.