Data Breaches at Healthcare Organizations in Illinois and Texas Impact 600,000 Individuals
Three healthcare organizations in the United States, located in Illinois and Texas, have reported significant data breaches affecting nearly 600,000 individuals. The North Texas Behavioral Health Authority disclosed a breach impacting 285,000 people, following a network intrusion detected in October 2025. Southern Illinois Dermatology reported a breach affecting 160,000 individuals, with the Insomnia ransomware group claiming responsibility for stealing patient data. Saint Anthony Hospital in Chicago experienced an email security incident compromising the information of 146,000 people. These breaches were added to the U.S. Department of Health and Human Services' data breach tracker, highlighting the ongoing cybersecurity challenges faced by healthcare providers.