Marquis Reports Ransomware Data Theft Affecting 672,075 People
Summary
Marquis reported that a ransomware attack on August 14, 2025, exposed personal and financial information belonging to 672,075 people. The company attributed the attack to a compromised SonicWall firewall and sued SonicWall.
Key points
- Marquis said attackers compromised a SonicWall firewall during a ransomware attack on August 14, 2025.
- The company reported that names, contact details, Social Security and Taxpayer Identification numbers, and financial account information for 672,075 people were stolen.
- The attack reportedly disrupted operations at 74 U.S. banks, though Marquis said the incident was limited to its own systems and did not affect customer systems.
- Marquis attributed the attack to a SonicWall security breach disclosed in September 2025.
- Marquis sued SonicWall, alleging gross negligence and misrepresentation contributed to the attack.
- Marquis said it was defending more than 36 consumer class action lawsuits related to the incident.
Article Details
- Victim Organization
- Marquis
- Victim Domain
- Unknown
- Incident Type
- Ransomware attack and data breach
- Incident Date
- 2025-08-14
- Data Types Exposed
- Names
- Dates of birth
- Addresses
- Phone numbers
- Social Security numbers
- Taxpayer Identification Numbers
- Financial account information
- Affected Records
- 672,075 individuals
- Affected Data Size
- Unknown
- Operational Impact
- The attack disrupted operations at 74 U.S. banks that use Marquis’s services. Marquis said the incident was limited to its systems and did not affect its customers’ systems.
- Ransom Or Extortion
- Unknown
- Claim Status
- confirmed