Marquis sues firewall provider SonicWall, alleges security failings with itsfirewall backup led to ransomware attack

Marquis, a fintech company, is suing firewall provider SonicWall, alleging that a security breach in 2025 allowed hackers to steal sensitive customer data, resulting in a ransomware attack. The lawsuit claims SonicWall's failure to secure its backup service caused significant harm to Marquis. At least 400,000 individuals have been affected by this breach, with potential for that number to rise as more notifications are filed.

Key Points

• Marquis has filed a lawsuit against SonicWall for alleged security failings.
• The complaint claims a previous breach at SonicWall allowed hackers access to sensitive firewall configuration, leading to ransomware on Marquis's network.
• Marquis alleges that SonicWall failed to secure its firewall backup services.
• Data taken included personally identifiable information from thousands of financial institution clients.
• SonicWall initially reported fewer than 5% of firewall backups were compromised but later conceded that all were affected.
• The lawsuit cites that a code change in February 2025 created a vulnerability allowing unauthorized access.

Relevance

• This incident highlights ongoing concerns about cybersecurity, particularly with third-party service providers.
• The growth in ransomware attacks in 2025 reflects the vulnerabilities within fintech and the reliance on cloud services for data storage.
• In the context of 2025 IT trends, this case underscores the importance of robust security practices and the need for companies to ensure third-party security compliance.

The lawsuit by Marquis against SonicWall serves as a critical reminder of the potential consequences of security breaches, emphasizing the necessity for companies to prioritize strong cybersecurity measures in an increasingly interconnected digital landscape.