Onsite Mammography, a Massachusetts medical provider, has reported a data breach that has compromised the personal and health information of over 350,000 patients. The breach, discovered in October 2024, involved unauthorized access to an employee's email account, leading to exposure of sensitive data including Social Security numbers and medical information. The company is offering affected individuals 12 months of free credit monitoring and identity protection services.

Ascension, a major U.S. healthcare system, has disclosed a data breach affecting personal and health information of patients due to a vulnerability in third-party software used by a former partner. The breach impacted over 114,000 individuals in Texas and included sensitive data such as Social Security numbers and medical records. Ascension is offering two years of free identity monitoring services to those affected.

SimonMed Imaging has notified over 1.27 million individuals about the compromise of their protected health information due to a cyberattack in January 2025. While the company confirmed data theft, there have been no reported cases of misuse, and affected individuals are being offered complimentary credit monitoring services.

Esse Health has notified over 263,000 patients that their personal and health information was compromised in a cyberattack that occurred on April 21, 2025. The breach resulted in the theft of sensitive data, although there was no evidence of stolen social security numbers, and the organization is offering free identity protection services to affected individuals. Restoration efforts suggest a ransomware attack, but no group has claimed responsibility for the incident.

A data breach involving Serviceaide has potentially exposed sensitive information of over 483,000 patients of Catholic Health between September 19 and November 5, 2024. Although there is no evidence of data being exfiltrated, affected individuals are being notified and offered 12 months of free credit monitoring and identity theft protection.