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US health insurer UnitedHealth Group said in a filing to government regulators on Thursday that its subsidiary Change Healthcare had been compromised by government-backed hackers.
In a filing Thursday, UHG Attributed to an ongoing cybersecurity incident impacting Change Healthcare Suspected Nation State hackers, but said it had no timeline for when its systems would be back online.
UHG did not attribute responsibility for the cyberattack to any specific nation or government, or say what evidence it had to support its claim.
A company spokesperson did not respond to a request for comment at the time of writing.
Change Healthcare provides patient billing in the US healthcare system. The company processes billions of health care transactions annually and claims to handle one in three US patient records, amounting to approximately a hundred million Americans.
The cyber attack started early Wednesday, According to the company’s incident tracker,
Change Healthcare has not yet disclosed the specific nature of its cyberattack.
Pharmacies across the US are reporting they are unable to fulfill prescriptions through patients’ insurance due to the ongoing outage at Change Healthcare, which handles most of the billing process.
Many people who work in the healthcare sector and whose work has been affected by the outage tell TechCrunch that they are experiencing downtime due to the ongoing cyberattack.
UHG said in its filing that it has “retained key security experts, is working with law enforcement and notified customers, clients and certain government agencies.”
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