Received a data breach letter?

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Investigation OpenMassachusetts AG Filing · August 18, 2025

Join the State Street Data Breach Class Action Lawsuit

State Street Corporation is a globally prominent financial services holding company and one of the world's largest asset managers and custodians. Operating at the core of the international financial system, the institution provides institutional asset management, investment servicing, wealth management, and custodial services to some of the largest pension funds, mutual funds, and corporate entities in the world. Because of its pivotal role in global finance, State Street routinely collects, processes, and maintains vast repositories of highly sensitive financial and personal information belonging to millions of individuals, including institutional investors, retirement plan participants, high-net-worth clients, and corporate employees. In 2025, State Street officially reported a significant data security incident to the Office of the Massachusetts Attorney General, placing thousands of individuals on alert. While the exact vector of the intrusion is still under investigation, incidents involving major financial institutions typically stem from sophisticated cyberattacks, vulnerabilities in enterprise network perimeters, or the compromise of third-party vendors and software supply chains. In the financial sector, threat actors frequently target network architecture to gain unauthorized access to core databases containing confidential client records and proprietary operational data, bypassing security controls to exfiltrate valuable personal information. Based on the nature of State Street's business operations, the data exposed in this security incident likely includes critical personally identifiable information and sensitive financial records. When data elements such as Full Names, Social Security Numbers, Date of Birth, and Financial Account Numbers are compromised, the risks to affected individuals are immediate and severe. Exposure of banking and account details opens victims up to direct financial account takeover, unauthorized wire transfers, and fraudulent withdrawals. Furthermore, the combination of Social Security numbers and personal identifiers creates a persistent, long-term threat of identity theft, allowing malicious actors to open fraudulent credit lines, secure illicit loans, and commit tax-related fraud in the victim's name. Financial institutions like State Street are bound by rigorous federal and state regulatory frameworks, including the Gramm-Leach-Bliley Act (GLBA) and Massachusetts data privacy and security statutes, which mandate the implementation of robust administrative, physical, and technical safeguards to protect non-public personal information. Under these statutory obligations, financial entities must maintain continuous network monitoring, encrypt sensitive data both in transit and at rest, and vet third-party service providers. The occurrence of a widespread data breach strongly suggests a potential failure in these mandated security protocols, raising serious questions about whether the institution fulfilled its legal duty of care to protect consumer data. Receiving an official data breach notification letter from State Street is a formal acknowledgment that your private information was compromised due to inadequate security measures. Legally, the receipt of this notice establishes the concrete injury and standing necessary to participate in a class action lawsuit aimed at holding the institution accountable. Affected individuals do not need to wait until they experience actual financial fraud or out-of-pocket losses to take legal action. Our firm handles these complex data privacy cases on a contingency fee basis, meaning you pay nothing out of pocket and owe no legal fees unless we successfully recover compensation on your behalf.

Massachusetts
State Filed
August 18, 2025
Date Filed

About the Notice You Received

About the State Street Data Breach Notification Letter

If you received a data breach notification letter, notice, or mailing from State Street, 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 State Street notification letter is more than an informational warning. It is legally required documentation — and the starting point for a potential class action claim against State Street.

This notice may also be referred to as:

  • Data breach notification letter
  • Security incident notice
  • Data breach notice
  • Breach notification mailing
  • Consumer data breach letter
  • Personal information breach notice
  • Written notice of data breach
  • Data breach alert letter

It Takes 2 Minutes

How to Join This Class Action

1

Submit Your Info

Tell us you received a notification letter from State Street. No need to have the letter handy — just your name and contact info.

2

Attorney Reviews Your Case

A licensed data breach attorney will review your eligibility within 24 hours and contact you directly. Completely free, no obligation.

3

Join & Pursue Compensation

If you qualify, your attorney handles everything. You pay nothing unless your case results in a recovery on your behalf.

Why This Breach Matters

What State Street Held About You

Companies across every industry collect and store personal data as part of normal operations — including Social Security numbers for tax compliance, payment card data for billing, and contact information at minimum. When that data is compromised, affected individuals face risks ranging from targeted phishing attacks and identity theft to unauthorized account access and financial fraud.

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

About the State Street Case

I received a State Street breach notice — does it mean my data was stolen?

Yes. Receiving a State Street 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.

Is there a deadline to act after receiving my State Street notification letter?

Yes. Massachusetts and federal law impose statutes of limitations on data breach claims. Once a class action lawsuit is filed by another attorney, the window to be a named plaintiff typically closes quickly. Submitting a free case review now ensures you are positioned before those windows pass. There is no cost and no obligation to find out if you qualify.

How much does it cost to pursue a claim?

Nothing upfront. Representation is 100% contingency-based — a fee is only collected if your case results in compensation. If there is no recovery, you owe nothing at any stage.

Why Join the State Street Class Action?

Your Notification Letter Is Evidence

State Street 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.

Statutes of Limitation Apply

Data breach claims have deadlines. The sooner you act after receiving your letter, the better positioned you are to participate and recover.

Class Actions Level the Playing Field

By joining with other State Street letter recipients, you have access to legal resources that would be too costly to pursue individually.

Zero Risk, Contingency Only

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

Have Questions? Call or Text Us Now

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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