Marquis Data Breach Affects Multiple U.S. Banks and Credit Unions

Marquis Data Breach Affects Multiple U.S. Banks and Credit Unions

First seen 4 Dec 2025, 12:42 UTC •Finance.YahooGbhackersDatabreachesSecurityaffairs.CoTechradar+1 •69% similarity •43.2

Article Content

Browse articles
ThreatCluster

A data breach involving fintech firm Marquis has compromised the information of dozens of U.S. banks and credit unions. The incident was triggered by a zero-day vulnerability that was exploited before it was known to SonicWall or its customers.

ThreatCluster AI How this analysis works

Extracted Entities

1 / 2

Community

Browse all →

Tracked Entities in This Story

Marquis ClayRat Marquis Breach Marquis Software Solutions Sonicwall Financial