Mariner Wealth Advisors, LLC, a financial services company, disclosed a cybersecurity incident involving unauthorized access to cloud application accounts of three associates. The breach occurred on November 21, 2025, and was discovered on November 24, 2025. The company reported the incident to regulators, including an Attorney General filing in Maine on or around June 1, 2026.
The breach affected 8,995 individuals across the U.S., including 17 Maine residents. Exposed data may have included names, account numbers, dates of birth, Social Security numbers, government-issued identification numbers, and other information needed to service customer accounts. Financial data and SSNs were involved. Mariner Wealth Advisors stated that financial, investment, and other client accounts were on separate systems and were not affected by this incident. The full contents of the official notification letter have not been publicly released, but descriptions indicate that 12 months of complimentary credit monitoring and fraud assistance through Cyberscout were offered.
Details about data breaches can emerge after initial reports, and consumer notifications may be delayed.