A legal dispute is intensifying in Texas as fintech firm Marquis sues its firewall provider, SonicWall, alleging that security failures within the company’s cloud backup service directly contributed to a far-reaching ransomware attack. 

The lawsuit, filed Monday in the U.S. District Court for the Eastern District of Texas, seeks a jury trial. Marquis claims that a 2025 breach at SonicWall “exposed critical security information for Marquis and every customer that used SonicWall’s firewall cloud backup service.”  

According to the complaint, hackers gained access to sensitive firewall configuration backup files, which were later used to infiltrate Marquis’ internal systems.  The Alleged...