Prosper Data Breach: What Happened, What Was Exposed, and Your Legal Options Featured
Impacted by Prosper’s Breach? What to Do and Your Rights
Prosper Marketplace has confirmed a major data breach affecting approximately 17.6 million people. If you received a notice—or ever applied for or used Prosper’s services—your sensitive information may be at risk. Below is what you need to know and how to protect yourself. If you were impacted, you may have legal rights and potential claims.
What Happened
In early September 2025, Prosper detected unauthorized access to systems holding customer and applicant information. Prosper has reported the incident to regulators and engaged cybersecurity experts and law enforcement. While the company says its core financial systems and customer-facing operations remain intact, reports indicate the attackers ran unauthorized database queries, allowing them to view and exfiltrate sensitive records. Early coverage points to compromised credentials as a likely entry point. The scope and nature of the data involved significantly elevate the risk of identity theft and targeted fraud.
What Information Was Exposed
Prosper’s disclosures and independent reporting indicate the breach may include one or more of the following data types:
- Full names and home addresses
- Dates of birth
- Social Security numbers (SSNs) and other government IDs
- Email addresses, phone and employment details
- Income and credit status information
- IP addresses and browser user-agent strings
Even if bank account numbers were not taken, this combination of personal and financial profile data can enable highly targeted phishing, account takeovers, and synthetic identity fraud.
What You Should Do Now
- Place a credit freeze (or at least a fraud alert) with Equifax, Experian, and TransUnion.
- Monitor your credit reports and bank/card statements for unfamiliar activity.
- Change passwords on Prosper and any reused accounts; enable multi-factor authentication (MFA).
- Be cautious with email/SMS—expect convincing phishing leveraging your real details.
- Use breach lookups (e.g., Have I Been Pwned) to see if your email appears in known exposures.
- Enroll in any free credit monitoring offered to affected individuals and consider identity theft protection.
Who Is Affected
Prosper reports ~17.6 million affected individuals nationwide, including current and former customers and loan applicants. You could be impacted even if you did not complete a loan or no longer use Prosper.
Your Legal Options
Attorneys are investigating a class action related to the Prosper data breach. Depending on your circumstances and state law, you may be entitled to remedies such as:
- Reimbursement for out-of-pocket losses and time spent responding to the breach
- Costs for credit monitoring/identity theft protection
- Statutory damages where applicable
- Court-ordered improvements to data security practices
Get a Free Case Review
If you received a breach notice—or suspect your information was involved—complete our short intake to learn your rights. There’s no upfront cost to speak with us about your potential claim.