Norton Healthcare discloses data breach after May ransomware attack

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Hospital cyberattack

Kentucky bloom arrangement Norton Healthcare has accepted that a ransomware advance in May apparent claimed advice acceptance to patients, employees, and dependents.

Norton Healthcare serves developed and pediatric patients in added than 40 clinics and hospitals above Greater Louisville, Southern Indiana, and the Commonwealth of Kentucky.

With over 20,000 employees, added than 1,750 active medical providers, and over 3,000 absolute providers on its medical staff, Norton Healthcare is Louisville's second-largest employer, with added than 140 locations throughout Greater Louisville and Southern Indiana.

"On May 9, 2023, Norton Healthcare apparent that it was experiencing a cybersecurity incident, after bent to be a ransomware attack," it said in a columnist absolution appear on Friday.

"Norton Healthcare notified federal law administration and anon began alive with a admired argumentative aegis provider to investigate and abolish the crooked access.

"Our analysis bent that an crooked individual(s) acquired acceptance to assertive arrangement accumulator accessories amid May 7, 2023, and May 9, 2023, but did not acceptance Norton Healthcare's medical almanac arrangement or Norton MyChart."

The attackers acquired acceptance to a advanced ambit of acute information, including name, acquaintance information, Social Security Number, date of birth, bloom information, allowance information, and medical identification numbers.

Norton Healthcare says that, for some individuals (likely employees), the apparent abstracts may accept additionally included banking anniversary numbers, driver's licenses or added government ID numbers, and agenda signatures.

Potentially afflicted individuals will accept two years of chargeless acclaim aegis casework and added advice in aperture notification letters.

Ransomware advance claimed by BlackCat/ALPHV

While Norton Healthcare didn't articulation the advance to a specific ransomware operation, the advance was claimed in backward May by the ALPHV (BlackCat) gang.

The attackers claimed in an access added to their aphotic web aperture armpit that they allegedly blanket 4.7TB of abstracts from the healthcare system's compromised systems, as DataBreaches reported.

The ransomware assemblage additionally leaked dozens of files as affidavit of the aperture and abstracts exfiltration, absolute some Norton Healthcare patients' Social Security numbers, case statements, and more.

BleepingComputer appear today that an advancing abeyance affecting ALPHV's websites could be affiliated to a law administration operation.

Norton Healthcare is aloof one of a continued cord of healthcare organizations in the United States that accept collapsed victim to ransomware.

For instance, healthcare provider Ardent Health Services, which operates 30 hospitals above six U.S. states, additionally appear aftermost ages that it was hit by a ransomware attack.

Since aftermost year, the U.S. government has issued assorted cautionary advisories apropos ransomware attacks targeting healthcare institutions nationwide.

One such advising came from the aegis aggregation at the U.S. Department of Health and Human Services (HHS) about ransomware operations like Royal, Venus, Maui, and Zeppelin targeting Healthcare and Public Health (HPH) organizations.

In October 2022, the Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), and the HHS notified hospitals about the Daixin Team cybercrime gang's breath targeting of healthcare accessories in ransomware attacks.