Core Viewpoint - Fintech giant Marquis is suing its firewall provider SonicWall for a breach that allegedly allowed hackers to steal sensitive information, leading to a ransomware attack on Marquis' network [2][4]. Group 1: Lawsuit Details - The lawsuit was filed in the U.S. District Court for the Eastern District of Texas and seeks a jury trial [2]. - Marquis claims that the 2025 breach at SonicWall exposed critical security information for Marquis and all customers using SonicWall's firewall cloud backup service [2]. - The CEO of Marquis stated that SonicWall's failure to secure its backup service resulted in significant reputational, operational, and financial harm to the company [2]. Group 2: Nature of the Breach - SonicWall allegedly allowed hackers to obtain keys that bypassed its firewall defenses, enabling unauthorized access to Marquis' internal network [3]. - The hackers used stolen information about customer firewall configurations, including emergency passcodes, to execute the ransomware attack [4]. Group 3: Data Compromised - The cyberattack resulted in the theft of personally identifiable information concerning customers of Marquis' financial institution clients, including names, dates of birth, postal addresses, and financial information such as bank account and credit card numbers, as well as Social Security numbers [5]. Group 4: SonicWall's Response - SonicWall initially reported that fewer than 5% of its customer firewall configuration backup files were exfiltrated but later conceded that every customer had their firewall backup files stolen in the breach [6]. - The company has not commented on the lawsuit as of the latest reports [6]. Group 5: Timeline of Events - Marquis began notifying affected individuals about the breach in December 2025, which occurred in August of the same year [7]. - SonicWall has not disclosed when hackers first gained access to its systems [7].