Prosper Marketplace, Inc. discovered unauthorized activity on its systems on September 1, 2025, and brought in a cybersecurity firm to investigate. The investigation found that between June and August 2025, someone ran unauthorized queries against company databases that store customer and applicant data, and personal information was obtained as a result. This falls under hacking or system intrusion. Prosper says it found no evidence that customer accounts or funds were accessed, and that customer-facing operations were not interrupted. It took until November 26, 2025, for Prosper to finish analyzing the affected data and determine exactly whose information was involved and what it included.
This notice is going to individuals whose personal information was stored in Prosper’s customer or applicant databases and was confirmed to have been accessed during the incident. The version of this letter we reviewed did not spell out the specific categories of information involved for this recipient — that section appeared blank in the source document Prosper filed. If you received this letter, the specific list of data types affecting you should appear in your copy; if it’s missing or unclear, it’s worth calling the number below to ask directly.
What information was exposed?
- Personal information from Prosper’s customer and/or applicant records (the notification did not specify the exact data elements for this recipient)
Prosper is offering two years of complimentary credit monitoring and identity restoration services through Experian IdentityWorks. To activate, enroll at www.experianidworks.com/1bcredit using your unique activation code by March 31, 2026 — the code will not work after that date. If you did not receive a code or need help enrolling, call 1-833-918-9464.
What should you do now?
- Enroll in the free Experian IdentityWorks monitoring and identity restoration service before the March 31, 2026 deadline — it costs you nothing and includes $1 million in identity theft insurance.
- Review your bank and credit card statements regularly for charges or accounts you don’t recognize.
- Request your free annual credit reports at www.annualcreditreport.com from all three bureaus and look for unfamiliar accounts or inquiries.
- Consider placing a fraud alert or a security freeze on your credit files with Equifax, Experian, and TransUnion, especially if you’re unsure exactly what information of yours was involved.
- Since the letter doesn’t specify which data types applied to you, consider signing up for a service like Aura or LifeLock, which can alert you if your information appears elsewhere online.
- If you notice suspicious activity, report it to your local police and file a complaint with the FTC at www.consumer.gov/idtheft.
If you have questions, Prosper can be reached at 1-833-918-9464, 8 a.m. to 8 p.m. CT, Monday through Friday, excluding major U.S. holidays.