If your breach is big enough, members of Congress take notice.

Such is the case for Universal Health Services. In a letter today, Senate Intelligence Committee Vice Chairman Mark Warner, D-Va., wrote to UHS Chairman and CEO Alan B. Miller to express “grave concerns” about a ransomware attack late last month and request more information on the company’s cybersecurity posture prior to the breach.

“As one of the nation’s largest medical facility operators with 3.5 million patient visits a year, it is imperative that medical care is provided to all patients without any interruption or disturbance created by inadequate cybersecurity,” Warner wrote. “While initial reports suggest that the attackers did not access patient or employee data, an incident such as this sharply highlights the need to ensure adequate cybersecurity hygiene in a healthcare setting.”

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