Marquis, a expertise firm utilized by a whole bunch of banks to research and visualize their clients’ knowledge, says a whole bunch of 1000’s 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 not less than 672,075 folks that hackers stole their data through the August 2025 cyberattack, in response to a listing with Maine’s legal professional basic’s workplace.
Greater than half of all these affected reside in Texas, in response to a separate knowledge breach discover filed in the state.
The disclosure is the fullest image but of the variety of folks affected by the breach, which has not been beforehand reported.
The breach allowed hackers to steal banking clients’ names, dates of beginning, and postal addresses. The hackers additionally stole clients’ monetary data, equivalent to financial institution accounts, debit, and bank card numbers. Marquis mentioned 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 crucial details about its firewalls, which hackers then used to compromise Marquis’ community, steal knowledge, and deploy ransomware.
In its lawsuit, Marquis mentioned 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.
