This reminds me of when the Danish mega-corp Maersk was attacked by ransomware and had all of their computers locked and decrypted with no access.

All computers except one, which due to a power failure had been offline the whole time.

This computer had the critical DNS information needed to restore the network.

Only problem: it was in Africa, in a country that required Visa which would take weeks to apply for and receive. So someone from the African office had to bring the hard drive to an airport that someone from the London office could travel to and pick up the critical hard drive, then bring it on a plane back to London.

A sweaty and nervous trip, I can imagine.

Whole story here: https://www.wired.com/story/notpetya-cyberattack-ukraine-rus...