Ameriprise Financial reported unauthorized access to stored company data with March 2026 detection timelines in Fox News and insurance-trade summaries, citing on the order of ~48,000 people and SSN/account-number-class fields in notification narratives. ShinyHunters appeared in follow-on security blogging as an attribution thread.
Canonical record: Ameriprise 2026 on BreachHistory.
Sources: Fox News, Top Class Actions