Cyberattacks From WannaCry Ransomware Slow But Fears Remain (bbc.com)
WannaCry ransomware, which has spread across 150 countries, appears to be slowing down with few reports of fresh attacks in Asia and Europe on Monday. A report on BBC adds: However staff beginning the working week have been told to be careful. The WannaCry ransomware started taking over users' files on Friday, demanding $300 to restore access. Hundreds of thousands of computers have been affected so far. Computer giant Microsoft said the attack should serve as a wake-up call. BBC analysis of three accounts linked to the ransom demands suggests only about $38,000 had been paid by Monday morning.
The first 2 steps are the most important. The second one alone should protect you.
Let's say, as an example, there is an ultrasound machine that was based around Windows XP.
Medical devices should be kept on a separate VLAN behind an ACL with a no access to the Internet and a dedicated update server. Exposure to the General VLAN can cause problems. From what I read about the British hospital, there network isn't highly structured.