Financial services data breaches expose Social Security numbers, bank and investment account numbers, credit information, transaction histories, and other highly sensitive financial data held by banks, credit unions, investment firms, and lenders. These breaches carry a direct and immediate risk of financial fraud, unauthorized account access, and long-term identity theft, since the exposed data often includes exactly what’s needed to open new lines of credit or drain existing accounts. Financial institutions are also frequent targets of third-party vendor breaches, where a breach at a smaller service provider exposes customer data across multiple banks or investment firms at once. Affected individuals may include current and former account holders, loan applicants, and investment clients, regardless of whether they still have an active relationship with the breached institution. This page tracks confirmed data breaches at banks, investment firms, and other financial services companies, including what data was exposed, which companies notified regulators, and what affected individuals can do next to secure their accounts and understand their legal options.
Money Mart, operating under Dollar Financial Group Inc., confirmed a data breach exposing Social Security numbers and other personal details of 4,928 customers between November 9 and November 29, 2025.
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Mark Leyden & Associates, an Indianapolis wealth management firm, disclosed that unauthorized access to a company email account exposed clients’ Social Security numbers, driver’s license numbers and financial account information.
Brown Advisory, a Maryland-based investment management firm, disclosed a data breach that exposed the Social Security numbers, financial account numbers, and identification documents of nearly 2,000 individuals nationwide.
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BHG Financial, formerly Bankers Healthcare Group, disclosed a data breach that exposed Social Security numbers and financial account details, prompting free credit monitoring for affected individuals.
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Bank3, a Memphis-based community bank, confirmed a data breach after the Qilin ransomware group claimed to have stolen 149 GB of client and internal financial data, affecting more than 11,500 individuals.
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Fintech payments company Nayax is investigating a claimed cyberattack after a hacking group calling itself The Syndicate said it stole roughly 1 billion payment card records and other sensitive data.
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Petrovits, Patrick, Smith & Co., a Connecticut accounting firm, disclosed a data breach exposing Social Security numbers and financial account information, prompting free credit monitoring for affected individuals.
A social engineering attack on automated investment platform Betterment exposed personal information belonging to roughly 1.4 million customers, including names, email addresses, and in some cases dates of birth and physical addresses.
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NACM Intermountain, a regional credit services organization, disclosed a data breach that exposed consumers’ Social Security numbers and credit or debit card information.
Navient Corporation has disclosed a cybersecurity incident that may have exposed names, addresses, dates of birth, and Social Security numbers, raising identity theft concerns for affected individuals.
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