Fintech firm Marquis is seeking compensation from SonicWall after a breach at the firewall provider exposed critical data, enabling hackers to steal customer information during a ransomware attack. Marquis confirmed that it stored a backup of its firewall configuration in SonicWall's cloud, linking the two incidents. SonicWall has requested evidence to support Marquis' claims.

SonicWall has revealed that a breach of its cloud backup service impacted 100% of firewall configuration files for all affected customers, a significant increase from the previously estimated 5%. The company is working with Mandiant to enhance security measures and has advised customers on necessary remediation steps.