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Marquis Software Solutions Breach Linked to SonicWall Security Incident

Marquis Software Solutions Breach Linked to SonicWall Security Incident

First seen 31 Jan 2026, 09:17 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

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.

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