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Marquis Accuses SonicWall of Security Lapses; Ties it to Ransomware Attack

ID: 6e54b306-20fc-5b89-8881-c28719c7b5c0

STIX ID: report--6e54b306-20fc-5b89-8881-c28719c7b5c0

Feed Name: The Cyber Express

Threat Score
85/100

Date Published: 2026-02-25

Date Updated: 2026-04-23

Author: Ashish Khaitan

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**Marquis sues SonicWall after a 2025 breach of SonicWall's cloud backup service allegedly exposed firewall configuration backups and emergency 'scratch codes', which attackers used to bypass defenses, deploy ransomware, and exfiltrate sensitive PII (including SSNs) from Marquis customers; SonicWall later acknowledged backup files for all customers were stolen and the lawsuit alleges an API code change created an exploitable vulnerability.**

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