Marquis, a expertise firm utilized by a whole bunch of banks to research and visualize their clients’ information, says a whole bunch of 1000’s of individuals had their private and delicate monetary info stolen in a ransomware assault final 12 months.
The Plano, Texas-based fintech firm is notifying at the least 672,075 those who hackers stole their info through the August 2025 cyberattack, in response to an inventory with Maine’s lawyer normal’s workplace.
Greater than half of all these affected dwell in Texas, in response to a separate data breach discover filed within 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 beginning, and postal addresses. The hackers additionally stole clients’ monetary info, resembling checking account, 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 security failings that allowed hackers to steal vital 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 information.killnetswitch.
