Marquis, a prominent financial technology company that provides data analysis services to numerous banks, has disclosed that a ransomware attack last year led to the theft of personal and financial data from over 672,000 individuals. The breach, which compromised sensitive information including Social Security numbers, has primarily affected people in Texas.
The cyberattack, which occurred in August 2025, exposed customers’ names, dates of birth, postal addresses, bank account information, debit and credit card numbers, and Social Security numbers. Marquis attributed the breach to security vulnerabilities in its firewall provider, SonicWall, alleging that these flaws were exploited by hackers to access critical data and deploy ransomware.
Marquis’s legal action against SonicWall highlights the broader implications of cybersecurity lapses within tech infrastructure providers, underscoring the importance of robust security measures to safeguard against data breaches.
Source: TechCrunch