This story admits a water system threatened by a hacker has a cause that is common. Complaint is that they are using an old OS and no firewall. How can this happen in today’s world?
It’s actually quite easy and common. When the network access was set up, it was many years ago and the security situation was not critical. It continues to work for many years and no problem was ever encountered, why worry.
It’s likely many health providers are in the same boat. Take this time to establish an annual review of your systems. This is the time to replace some equipment in order to keep up with the greater risks we experience.