Researchers at Greenbone Networks vulnerability analysis and management company analyzed 2,300 Picture Archiving and Communication System (PACS) systems. Of the 2,300, 590 archiving systems were accessible from the Internet, exposing 24 million medical records from 52 countries. They contained 737 million images linked to this patient data, around 400 million of which are accessible or can be easily downloaded from the internet.
Many of these servers were set up and then forgotten about, or weren’t patched regularly.
Read more about it here.