By Top Class Actions  |  March 2, 2026

Category: Lawsuits to Join

You may qualify for the arbitration investigation.

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(Photo Credit: MMD Creative/Shutterstock)

Was your personal information exposed in the Prosper data breach? In 2025, Prosper confirmed a major cyberattack that may have compromised Social Security numbers and financial data. Affected customers may have legal options.

Submit your information now to see if you qualify for the Prosper data breach arbitration investigation.

Prosper, a popular peer-to-peer lending platform, announced a large-scale cyberattack that may have impacted more than 17 million clients and applicants.

The Prosper data breach reportedly involved the exposure of highly sensitive personal and financial information, potentially including Social Security numbers, government identification numbers, bank account information and other confidential data. Incidents of this scale can increase the risk of identity theft, financial fraud and long-term misuse of personal information.

As a result, a mass arbitration investigation is now underway to evaluate potential legal claims. Individuals whose information was exposed may have the right to pursue action.

Do you qualify?

You may qualify to participate in the Prosper data breach arbitration investigation if your personal information was compromised in the 2025 cyberattack.

Individuals who received a data breach notice — or who believe their information may have been exposed — are encouraged to submit their information for review.

Complete the secure form on this page to determine whether you are eligible to move forward.

Fill out the form on this page for more information.

The law firm responsible for the content of this page is: Z Law, LLC; Timonium, MD; 443-213-1977; zlawmaryland.com.

What happened in the Prosper data breach and cyberattack?

On September 1, 2025, Prosper detected unauthorized activity within its network and later confirmed a significant cyberattack. Following an internal investigation, the company determined that hackers may have accessed and obtained consumer information.

Although Prosper states that it contained the cyberattack shortly after discovery, more than 17 million customers and applicants may have had sensitive personal information exposed in the data breach.

If your information was impacted, you could face an increased risk of identity theft, financial fraud or misuse of your personal data, but affected consumers may have legal options.

What information was exposed by the Prosper cyberattack?

It is not yet fully clear exactly what information was accessed during the Prosper data breach. However, the compromised database reportedly contained a wide range of sensitive personal and financial information.

The types of information that may have been exposed in the Prosper cyberattack include:

  • Social Security numbers or national identification numbers
  • Bank account numbers
  • Payment card numbers
  • Government-issued identification numbers
  • Tax information
  • Passport numbers
  • Dates of birth
  • Prosper account numbers
  • Email addresses
  • Physical addresses
  • IP addresses
  • Names

Although Prosper has stated that customer accounts themselves were not accessed, the exposure of highly sensitive personal information can still create a risk of identity theft or financial fraud.

How to file a Prosper data breach claim

If you received a notice stating that your information was exposed in the Prosper data breach — or if you believe your personal information may have been compromised in the cyberattack — you may have legal options.

To begin the process, complete the secure form on this page. Your submission will be reviewed to determine whether you qualify to participate in the ongoing Prosper data breach arbitration investigation.

There is no cost to have your information reviewed.

See If You Qualify

Join a Prosper data breach arbitration investigation

Filling out this form is quick, easy and does not require you to upload any documents. It only takes a few minutes to see if you qualify.

After you fill out the form, an attorney(s) or their agent(s) may contact you to discuss your legal rights.

The choice of a lawyer is an important decision and should not be based solely on advertisements.

PAID ATTORNEY ADVERTISEMENT: THIS WEB PAGE IS AN ADVERTISEMENT AND THE PARTICIPATING ATTORNEY(S) ARE INCLUDED BECAUSE THEY PAY AN ADVERTISING FEE. Top Class Actions is not a law firm, lawyer referral service, or prepaid legal services plan. We do not endorse or recommend any third-party claims processing company, lawyer, or law firm who participates in the network. We do not make any representation, and have not made any judgment, as to the qualifications, expertise, or credentials of any participating lawyer or processing group. No representation is made that the quality of the legal services or claims processing to be performed is greater than the quality of legal services or claims processing performed by other lawyers or claims processing group. The information contained herein is not legal advice. Any information you submit to Top Class Actions does not create an attorney-client relationship and may not be protected by attorney-client privilege because Top Class Actions is not a law firm. Instead, your information will be forwarded to an attorney(s) or their agent(s) or a claims processing firm for the purpose of a confidential review and potential representation if you qualify. You will only be contacted by an attorney(s) or their agent(s) in response to your inquiry if your initial information appears to qualify you for representation. If you are not contacted by an attorney(s) or their agent(s) within one week, you should consult another firm since all legal claims are subject to filing deadlines. All photos on this website are stock art and do not depict clients.

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