Hospital devices exposed to hacking with unsupported operating systems

As reported on CNET today:

A huge proportion of internet-connected imaging devices at hospitals run outdated operating systems, according to research released Tuesday by Palo Alto Networks, a cybersecurity firm. The company found that 83% of these devices run on outdated software that can't be updated even when it contains known vulnerabilities that hackers can exploit.

This is such a serious issue, but most people are oblivious to the problem of critical legacy systems that cannot be upgraded. Most critics just make uniformed statements like "upgrade" to a modern OS, but it's usually a cocktail of ageing hardware and legacy software requirements that will stop upgrades from happening.