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Prosper

Have I Been PwnedConfirmed breachAdded October 16, 2025Occurred September 1, 202517,605,276 accountsprosper.comAll Prosper breaches →
What was exposed
Browser user agent detailsCredit status informationDates of birthEmail addressesEmployment statusesGovernment issued IDsIncome levelsIP addressesNamesPhysical addresses
What to do if you were affected
Details
In September 2025, Prosper announced that it had detected unauthorised access to their systems, which resulted in the exposure of customer and applicant information . The data breach impacted 17.6M unique email addresses, along with other customer information, including US Social Security numbers. Prosper advised that they did not find any evidence of unauthorised access to customer accounts and funds, and that their customer-facing operations were uninterrupted. Further information about the incident is contained in Prosper's FAQs .
Frequently asked questions

What is the Prosper data breach?

In September 2025, Prosper announced that it had detected unauthorised access to their systems, which resulted in the exposure of customer and applicant information . The data breach impacted 17.6M unique email addresses, along with other customer...

When did the data breach happen?

This data breach occurred around September 2025.

How many accounts were affected?

Around 17,605,276 accounts were affected.

What information was exposed?

Exposed data included Browser user agent details, Credit status information, Dates of birth, Email addresses, Employment statuses, Government issued IDs, Income levels and IP addresses.

What should I do if I was affected?

Place a fraud alert or credit freeze with the major credit bureaus to block new accounts opened in your name. Expect more phishing and spam at this address. Treat messages that reference this company with extra caution. Be wary of targeted scams that use your personal details to sound convincing.

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