Marquis disclosed that a ransomware gang stole data for 672,075 individuals in an August 14, 2025 breach that disrupted operations at 74 U.S. banks after attackers compromised a SonicWall firewall. The stolen information included names, dates of birth, addresses, phone numbers, Social Security and Taxpayer Identification numbers, and financial account details, and Marquis has filed a lawsuit against SonicWall while defending multiple class action suits. #Marquis #SonicWall
Keypoints
- A ransomware attack on August 14, 2025 compromised a SonicWall firewall and affected Marquis’s systems.
- Attackers exfiltrated personal and financial data for 672,075 individuals, including SSNs and bank account information.
- The breach disrupted operations at 74 banks that use Marquis’s services.
- Marquis links the incident to a September SonicWall security breach and has sued SonicWall for gross negligence and misrepresentation.
- Marquis is defending more than 36 consumer class action lawsuits and is seeking monetary damages and indemnification.