Change Healthcare says the February ransomware attack on its systems resulted in the theft of medical records of a “substantial proportion of people” in the US (Zack Whittaker/TechCrunch)

Zack Whittaker / TechCrunch:
Change Healthcare says the February ransomware attack on its systems resulted in the theft of medical records of a “substantial proportion of people” in the US  —  Change Healthcare has confirmed a February ransomware attack on its systems, which brought widespread disruption …