Marquis sues SonicWall over backup breach that led to ransomware attack

**Executive summary:** Attackers leveraged a SonicWall MySonicWall cloud backup API change to access encrypted firewall configuration backups (including credentials and MFA scratch codes), which enabled compromise of Marquis Software Solutions and a subsequent ransomware attack that disrupted operations at 74 U.S. banks and exposed sensitive PII; investigators attribute the intrusion to state-sponsored actors and Marquis has sued SonicWall for negligence.