Perseus House Data Breach Exposes PHI and PII

Perseus House Inc., a nonprofit mental health care organization based in Erie, Pennsylvania, disclosed a data breach that occurred in late 2025 and affected 969 individuals in the United States.

Perseus House became aware of suspicious activity on its computer systems and launched an investigation into the nature and scope of the activity. The organization took steps to understand the full extent of the potential compromise, working to determine what systems were accessed and what data may have been affected.

The investigation found that an unauthorized actor gained access to certain Perseus House Inc. systems and copied files on or around Nov. 29, 2025.

The breach exposed both personally identifiable information and protected health information including dates of birth, Social Security numbers, financial account information (including personal banking numbers), home addresses, telephone numbers, medical information (which may include diagnoses, treatments and providers) and health insurance information (such as group or policy numbers).

The breach affected certain current and former residents of the organization's programs, employees and other individuals associated with Perseus House Inc.

The breach was reported to the U.S. Department of Health and Human Services on Feb. 20, 2026. Perseus House also posted a notice about the data event on its website.

Perseus House's response to the breach

The organization encouraged individuals who may have been affected to remain vigilant against identity theft by reviewing account statements, credit reports and explanations of benefits for any unusual activity. The notice also advised that any suspicious activity be reported to health care providers, insurance companies or financial institutions.

Individuals who have questions about the breach or need assistance can contact the Perseus House Inc. Human Resource Department at 814-480-5900, ext. 20253, Monday through Friday between 8 a.m. and 4 p.m. Eastern, excluding U.S. holidays. Individuals may also write to the organization at 1511 Peach St., Erie, PA 16501.