Madera Community Hospital Data Breach Exposes 150,810 Patient Records

Madera Community Hospital reported a data breach affecting 150,810 individuals after unauthorized access to its network in May 2025. The breach, identified on May 29, 2025, involved a two-day intrusion where personal, financial, and medical data were likely copied. The compromised information included names, birthdates, Social Security numbers, and limited medical details. Although the attackers initially demanded a ransom, they withdrew the demand upon realizing the target was a hospital. The hospital has not found evidence of the stolen data being misused publicly. Notifications to affected patients began in mid-July 2026, and the hospital has since improved its security measures. The U.S. Department of Health and Human Services classified this incident as a hacking or IT incident.

Key Points: • Over 150,000 patient records were exposed due to unauthorized network access. • The breach occurred over two days in late May 2025, with no evidence of data misuse found. • Attackers withdrew their ransom demand after learning the target was a hospital.