Active Legal Case · Letter recipients may be eligible to join a class action lawsuit against Citigroup Global Markets Inc.
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If you received a data breach notification letter from Citigroup Global Markets Inc., send us your details and a member of the legal team will review your request. There is no cost or obligation.
No fee unless you recover.
Sending this form does not create an attorney-client relationship.
Citigroup Global Markets Inc. appears to be a major financial institution providing wealth management, brokerage, and investment banking services. As a leader in the financial sector, the company typically collects and stores highly sensitive consumer information, including names, Social Security numbers, dates of birth, account numbers, and detailed financial account information. In 2025, the company officially reported a data breach to the Massachusetts Attorney General. If you received a data breach notification letter in the mail, it means your personal information may have been compromised in this incident. This page provides an overview of the situation to help you understand what occurred and what steps you should take to protect your financial identity.
About the Notice You Received
If you received a data breach notification letter, notice, or mailing from Citigroup Global Markets Inc., this communication confirms that your personal information was exposed or accessed without authorization.
Under Massachusetts law (M.G.L. c. 93H), companies are legally required to send a written breach notification to every affected resident. This may arrive as a letter in the mail, a formal notification mailing, or an email notice — all are equally valid as evidence of harm.
Your Citigroup Global Markets Inc. notification letter is more than an informational warning. It is legally required documentation — and the starting point for a potential class action claim against Citigroup Global Markets Inc..
This notice may also be referred to as:
It Takes 2 Minutes
Tell us you received a notification letter from Citigroup Global Markets Inc.. No need to have the letter handy — just your name and contact info.
A licensed data breach attorney will review your eligibility within 24 hours and contact you directly. Completely free, no obligation.
If you qualify, your attorney handles everything. You pay nothing unless your case results in a recovery on your behalf.
Why This Breach Matters
Retailers collect payment card numbers, billing addresses, purchase histories, and account credentials. A breach can put your financial data at immediate risk of use in fraudulent purchases or exposure on criminal marketplaces where it may be sold to multiple bad actors.
Massachusetts residents are protected by M.G.L. c. 93H, which gives you the right to pursue legal remedies when a company fails to adequately protect your data.
Common Questions
What is the Citigroup Global Markets Inc. data breach notification letter?
The Citigroup Global Markets Inc. notification letter, notice, or mailing is a legally required communication confirming that your personal information was involved in a data breach. Massachusetts law requires companies to send this written notice to every affected resident. The letter or mailing you received is official documentation of the breach and serves as evidence for a potential class action claim.
I received a Citigroup Global Markets Inc. breach notice — does it mean my data was stolen?
Yes. Receiving a Citigroup Global Markets Inc. data breach letter, notice, or notification mailing means your personal information was accessed or exposed without authorization. Companies are only required to send these notices when a confirmed breach occurred affecting your data specifically.
Do I need the original notification letter from Citigroup Global Markets Inc.?
No. You do not need to have the letter, notice, or mailing on hand to request a case review. Your name, contact info, and the name of the company are enough to get started.
How much does it cost to join?
Nothing upfront. Our representation is 100% contingency-based — we only collect a fee if your case results in compensation. If there is no recovery, you owe nothing.
Is there a deadline to act after receiving my Citigroup Global Markets Inc. notification letter?
Yes. Massachusetts and federal law impose statutes of limitations on data breach claims. The sooner you act after receiving your Citigroup Global Markets Inc. letter or notice, the better positioned you are to recover.
Citigroup Global Markets Inc. was required by law to notify you because your personal data was compromised. That letter is evidence of harm — and the foundation for a legal claim.
Data breach claims have deadlines. The sooner you act after receiving your letter, the better positioned you are to participate and recover.
By joining with other Citigroup Global Markets Inc. letter recipients, you have access to legal resources that would be too costly to pursue individually.
You never pay attorney fees out of pocket. Our representation is 100% contingency-based — we only get paid if you recover compensation.
No Fee Unless You Recover
A member of the legal team is available to answer your questions. Or scroll to the top to submit your case review form — free and no obligation.
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