Marquis, a know-how firm utilized by tons of of banks to investigate and visualize their clients’ information, says tons of of hundreds of individuals had their private and delicate monetary data stolen in a ransomware assault final 12 months.
The Plano, Texas-based fintech firm is notifying a minimum of 672,075 people who hackers stole their data throughout the August 2025 cyberattack, in keeping with a listing with Maine’s legal professional normal’s workplace.
Greater than half of all these affected reside in Texas, in keeping with a separate information breach discover filed in the state.
The disclosure is the fullest image but of the variety of individuals affected by the breach, which has not been beforehand reported.
The breach allowed hackers to steal banking clients’ names, dates of delivery, and postal addresses. The hackers additionally stole clients’ monetary data, akin to financial institution accounts, debit, and bank card numbers. Marquis stated the hackers additionally took clients’ Social Safety numbers.
The fintech firm sued its firewall supplier, SonicWall, in February, accusing the corporate of safety failings that allowed hackers to steal essential details about its firewalls, which hackers then used to compromise Marquis’ community, steal information, and deploy ransomware.
In its lawsuit, Marquis stated SonicWall created a vulnerability that allowed hackers to steal its clients’ firewall configuration backup recordsdata, together with Marquis’ personal.
Marquis didn’t instantly remark when contacted by TechCrunch.
