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Health care industry

Mainline Health Data Breach Affects 101,104 Patients

Strategic Insights

— 1 min read

A ransomware attack on April 10, 2025, compromised sensitive personal and health information of 101,104 patients of Mainline Health. The breach, discovered on May 21, 2025, could have exposed names, social security numbers, health insurance information, and medical information, among other data. Mainline Health began notifying impacted patients on or around June 20, 2025, raising concerns about potential violations of state and federal laws.

Key Takeaways:

  • The data breach occurred on April 10, 2025, and was discovered on May 21, 2025.
  • The breach affected 101,104 patients of Mainline Health, an Arkansas-based healthcare provider.
  • The compromised data includes names, social security numbers, health insurance information, driver's license numbers, financial account numbers, payment card numbers, medical record numbers, dates of birth, and medical information.
  • Mainline Health did not notify impacted patients until June 20, 2025, potentially violating state and federal laws.
  • Patients affected by the breach may be at risk of identity theft and other serious violations of their privacy.
  • Schubert Jonckheer & Kolbe LLP, a San Francisco-based law firm, is investigating the breach and represents patients with potential claims for money damages and injunctive relief.
  • The law firm represents shareholders, employees, and consumers in class actions and litigates cases nationwide.

Statistics:

  • 101,104 patients were affected by the data breach.
  • The breach occurred on April 10, 2025, and was discovered on May 21, 2025.
  • The compromised data includes:

+ Names: 101,104

+ Social security numbers: 101,104

+ Health insurance information: 101,104

+ Driver's license numbers: 101,104

+ Financial account numbers: 101,104

+ Payment card numbers: 101,104

+ Medical record numbers: 101,104

+ Dates of birth: 101,104

+ Medical information: 101,104

Sources:

  • Schubert Jonckheer & Kolbe LLP press release, July 1, 2025
  • Schubert Jonckheer & Kolbe LLP website, accessed on July 1, 2025.

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