Looks like this also took down half of New Zealand's economy. https://www.nzherald.co.nz/nz/bank-problems-reports-bnz-asb-...
Banks are down so petrol stations and supermarkets are basically closed. People can't check in to airline flights, various government services including emergency telephone and police are down. Shows how vulnerable these systems are if there's just one failure point taking all those down.