FINTECH FIRM MARQUIS BLAMES HACK AT FIREWALL PROVIDER SONICWALL FOR ITS DATA BREACH

Summary from the TLDR InfoSec newsletter

Fintech data broker Marquis has pinned a major 2025 ransomware breach on firewall supplier SonicWall, claiming a SonicWall cloud backup hack exposed its firewall configurations and credentials. Hackers allegedly used this data to bypass defenses and steal sensitive US banking customer information, including Social Security numbers. Marquis is weighing legal and financial recoupment options, while SonicWall publicly disputes any proven link to broader ransomware campaigns.