Healthcare Data Breaches and Patient Record Exposure at Providers and Vendors
Multiple healthcare entities reported unauthorized access and patient data exposure, with incidents spanning direct provider compromises and third-party vendor breaches. Insight Hospital and Medical Center (Chicago) disclosed suspicious activity in its IT environment, with investigators confirming unauthorized network access from Aug 22 to Sep 11, 2025; the organization said the review is ongoing but potentially impacted data includes names, DOB, SSNs, passport numbers, financial account data, treatment information, and insurance details. Two extortion groups publicly claimed responsibility: LockBit alleged theft of ~200 GB and Termite claimed 360 GB, stating it leaked data in late February 2026.
In France, attackers stole about 15.8 million administrative files after breaching health-ministry software supplier Cegedim Santé, impacting its MonLogicielMedical (MLM) product used by thousands of doctors; the stolen data reportedly included identity and contact details, and in a smaller subset (~165,000 files) free-text doctors’ notes that in limited cases contained sensitive medical-history details. Separately, OCAT, LLC d/b/a Evoke Wellness at Hilliard updated a breach notification describing unauthorized network activity and potential access to patient information; reporting also tied the matter to an insider misuse investigation in which a former employee allegedly accessed and sold patient data, though public filings contained inconsistent timelines about when the underlying incident occurred and when it was discovered.
Timeline
Mar 3, 2026
Insight attack publicly claimed by LockBit5 and Termite
By the time of Insight Hospital's disclosure, the LockBit5 and Termite extortion groups had each claimed responsibility for the attack and alleged that large volumes of stolen data had been leaked on their sites.
Feb 27, 2026
Evoke breach notification filed with Maine AG
External counsel for Evoke Wellness at Hilliard submitted a breach notification to the Maine Attorney General on February 27, 2026, describing unauthorized network activity and possible access to patient data. The filing reportedly listed 261 affected individuals, adding to inconsistencies in the case record.
Feb 2, 2026
Deaconess discloses MediCopy vendor data breach
Deaconess Health System disclosed that an unauthorized actor accessed MediCopy's cloud-based file-sharing software on January 13, 2026 and downloaded files tied to release-of-information requests. Deaconess said the incident, reported to it on February 2, affected patients of Deaconess Henderson Hospital and Deaconess Union County Hospital, while its own IT and EHR systems were not accessed.
Dec 1, 2025
Cegedim Santé breach confirmed after theft of 15.8M records
A breach affecting Cegedim Santé, a software supplier to France's health ministry, was confirmed in late 2025. Attackers stole about 15.8 million patient administrative files, including roughly 165,000 records containing doctors' free-text notes with limited sensitive medical details.
Sep 1, 2025
Insight Hospital identifies data security incident
Insight Hospital and Medical Center disclosed that it identified the security incident in September 2025 after the period of unauthorized access. Its review of affected individuals and data types remained ongoing at the time of reporting.
Aug 22, 2025
Insight Hospital network accessed by unauthorized actor
Insight Hospital and Medical Center said unauthorized access to its network occurred between August 22 and September 11, 2025. The organization later began assessing what information and how many individuals were affected.
Jul 1, 2025
FTC finalizes separate settlement with Evoke
DataBreaches.net noted that the FTC finalized a settlement with Evoke in July 2025 over advertising-related allegations. The settlement was described as unrelated to the breach matter.
May 20, 2025
Evoke says it learned of issue from law enforcement
Evoke Wellness at Hilliard's amended patient notice stated the organization was informed by law enforcement of the issue on May 20, 2025, contradicting other accounts that suggested internal discovery later in the year.
Jul 7, 2024
Unauthorized activity allegedly begins at Evoke Wellness at Hilliard
Notification materials cited by DataBreaches.net state an incident at OCAT, LLC dba Evoke Wellness at Hilliard occurred on July 7, 2024, though the reporting notes conflicting timelines and uncertainty around the breach chronology.
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