Marquis Software Solutions, a Texas-based financial technology vendor, discovered a ransomware attack on August 14, 2025, which compromised the data of customers from over 80 financial institutions. The company provides marketing, compliance software, data analytics, CRM tools, and digital marketing services to banks, credit unions, and mortgage lenders.
The breach involved data from over 800,000 credit union and bank customers, with specific reports citing 824,000 consumers. The exposed data included full names, addresses, Social Security numbers, Taxpayer Identification Numbers, dates of birth, phone numbers, and financial account information. The full extent of affected individuals and states remains unclear as Marquis serves over 700 institutions.
Notifications were delayed, with financial institutions informed in late October 2025 and consumers in early December 2025 or January 2026. Complimentary credit monitoring has been offered to affected individuals. Details can continue to emerge later, and notices may be further delayed.