Cyber-attack closes hospital emergency rooms in three US states

- A cyber-attack has shut down emergency rooms in at least three states, forcing a hospital operator to divert patients to other facilities.

- Ardent Health, which oversees 30 hospitals in states across the US, including New Mexico, Texas, and Oklahoma, said it had been targeted by a ransomware attack over the Thanksgiving holiday.

- The attack had shut down a significant number of its computerized services, affecting computer programs that track patients' healthcare records, among others.

- Ransomware attacks …

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