In late 2025, Together Women's Health experienced a data breach related to a network security event involving its healthcare data vendor, Aesto Health. Strauss Borrelli PLLC announced an investigation into the incident on August 18, 2026. Official breach notification letters to affected individuals reportedly began to be mailed around August 21–25, 2026.
The breach, which affected multiple healthcare organizations through Aesto Health's services, involved protected health information. Exposed data types for the underlying vendor incident included names, Social Security numbers, driver's license numbers, taxpayer identification numbers, financial account numbers, medical information, medical histories, claims/billing data, and health insurance information. While a specific number of Together Women's Health patients affected is not available, the broader Aesto Health incident impacted 9,540,683 individuals.
Details can continue to emerge as investigations progress. Consumers who received notices may find more information from the company. A California Attorney General's office filing for "Together Women's Health LLC - Aesto" details the incident, and a law firm is investigating a potential class action on behalf of affected patients.