Marquis confirms data breach, point finger of blame at SonicWall firewall

Techradar • January 31, 2026

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Marquis suffers ransomware attack, losing sensitive customer and financial data · Company blames SonicWall breach, though SonicWall denies direct ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Marquis Software Solutions Breach Linked to SonicWall Security Incident Marquis Software Solutions, a Texas-based financial services provider, has reported that a ransomware attack in August 2025, affecting multiple banks and credit unions, was due to a breach at its firewall provider, SonicWall. An investigation revealed that attackers utilized firewall data stolen from SonicWall to compromise Marquis's systems. 13 sources 44

Extracted Entities

Attack Types (2)

Data Breach Ransomware

Companies (1)

Ransomware Groups (1)