Missouri healthcare supplier Esse Well being is notifying over 263,000 people who their private data was stolen in a disruptive April 2025 cyberattack.
The incident was found on April 21 and impacted the group’s entry to the digital medical document system, whereas additionally taking down its cellphone system.
By Could 13, the healthcare supplier had restored sure programs and was capable of fulfill scheduled appointments or procedures. The cellphone programs had been restored in early June, together with different main patient-facing community programs, the group stated in an incident discover.
On June 20, Esse Well being stated its investigation into the assault decided {that a} risk actor breached its community on April 21 and stole information containing private data.
The exfiltrated information included names, addresses, dates of start, Social Safety numbers, medical document numbers, affected person account numbers, well being data, and medical insurance particulars.
“As a part of our ongoing dedication to the privateness and safety of data in our care, we’ve applied further safety enhancements to additional strengthen our defenses. Right now there isn’t any indication that any of the concerned data has been misused,” the group stated.
Nonetheless, Esse Well being is offering the impacted people with 12 months of free identification safety providers, in addition to with steering on easy methods to forestall identification theft and fraud.
On Monday, the healthcare supplier knowledgeable the Maine Legal professional Basic’s Workplace that 263,601 people had been impacted by the information breach.Commercial. Scroll to proceed studying.
Esse Well being has not shared particulars on the kind of cyberattack it fell sufferer to, however the network-wide disruption it suffered means that ransomware may need been concerned. SecurityWeek has not seen any recognized ransomware group claiming accountability for the incident.
Esse Well being is an impartial doctor group healthcare supplier that operates 50 places throughout the Higher St. Louis space in Missouri.
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