Prosper Marketplace, Inc. Data Breach Notice (Oregon Attorney General): What Was Exposed & What To Do

Prosper Marketplace, Inc. notified Oregon residents of a data breach in a filing reported to the Oregon Department of Justice on December 09, 2025. The filing places the incident itself on April 29, 2025, and states that 13,076,476 people were affected. The notice describes the exposed material as personal information.

Because Prosper operates in consumer lending, a breach of this scale raises practical questions for account holders and applicants about what information may have been involved and what steps they can take while fuller public detail remains limited.

Inside the incident

According to the Oregon Attorney General filing, Prosper Marketplace, Inc. reported the matter on December 09, 2025. The same filing dates the underlying incident to April 29, 2025. The number of people affected is given as 13,076,476. The notification characterizes the exposed data as personal information; beyond that phrasing, the public record supplied here does not detail the precise categories, the technical method of access, or whether the incident involved external intrusion, credential misuse, a vendor, or another vector.

No additional timelines, containment steps, or forensic findings are included in the facts provided. Attribution to any specific threat actor is also absent. What is established is the sequence of dates, the headcount of affected individuals, the organization named, and the high-level description of personal information in the breach notice.

How a breach like this happens

Incidents that lead to notifications of this kind commonly begin with unauthorized access to systems that store customer or applicant records. Typical pathways, in general terms and not as a description of this case, include compromised employee or contractor credentials, exploitation of unpatched software, misconfigured cloud storage, phishing that yields remote access, or weaknesses at a third-party service provider that handles data on the organization’s behalf.

Once access is obtained, attackers may copy databases or files containing identity and account-related fields. Detection can lag weeks or months, which is one reason a notice date may sit well after the stated incident date. Organizations then investigate scope, determine notification obligations under state law, and file with regulators such as an attorney general’s office. None of these general patterns confirms the mechanism used against Prosper; they simply outline how comparable events often unfold when method details are not yet public.

About Prosper Marketplace, Inc.

Prosper Marketplace, Inc. is a U.S. company known for operating an online peer-to-peer and marketplace lending platform. It connects individual borrowers seeking personal loans with investors who fund those loans. Firms in this sector routinely collect and retain substantial volumes of personal and financial information in order to underwrite credit, service accounts, comply with identity and anti-fraud rules, and communicate with customers.

A breach affecting a lending marketplace is consequential because the data such companies hold is often sufficient to support identity theft, account takeover attempts, or targeted social-engineering attacks. The Oregon filing indicates the company treated the event as requiring formal notice to residents and to the state, consistent with breach-notification statutes that apply when personal information is involved at scale.

What was likely exposed

The breach notification, as reflected in the facts, names the exposed material as personal information. It does not itemize fields such as Social Security numbers, dates of birth, addresses, bank account details, income data, or credit-related attributes. Public detail on exact data elements is therefore limited.

Organizations in marketplace lending typically maintain records that can include names, contact information, government identifiers, financial account or payment data, employment and income details, credit history elements, and loan application or servicing records. Whether any or all of those categories were involved in this incident is unconfirmed beyond the notice’s reference to personal information. Readers should treat specific field-level claims as unverified unless Prosper or regulators publish a fuller inventory.

Why it matters

For affected individuals, exposure of personal information can increase the risk of fraudulent credit applications, phishing that references real account relationships, and long-term identity misuse. Even when passwords are not involved, combinations of identity data can be reused across other services. The reported figure of more than thirteen million people indicates a large population that may need to monitor credit and account activity for an extended period.

For the organization, a breach of this size carries regulatory, operational, and trust consequences. State notification duties, potential inquiries from attorneys general, and the cost of investigation and customer support are common follow-on effects. The gap between the April 29, 2025 incident date and the December 09, 2025 reporting date also underscores how long affected people may have been unaware, which can compress the window for early protective steps.

If your data was in this breach

If you have ever applied for or held a loan or account through Prosper, treat the notice as a prompt to act even if you have not received a personal letter yet. Place a fraud alert or credit freeze with the major credit bureaus, review credit reports and loan statements for unfamiliar activity, and be cautious of unsolicited calls or messages that reference Prosper or your personal details. Change passwords on related financial accounts and enable multi-factor authentication where available. Keep any official notice you receive; it may include reference numbers or guidance specific to this event.

You can also run a free exposure scan of your email address to check whether your information has already surfaced in known breach datasets, which can help you prioritize further monitoring and password changes across other sites.

AICompiled with AI assistance from public sources and published under our editorial standards.