Prosper Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving Prosper.
•Discovered on September 1, 2025.
•Possible data exposed: Browser user agent details, Credit status information, Dates of birth, Email addresses, Employment statuses, Government issued IDs, Income levels, IP addresses, Names, Physical addresses, SSN.
•Confirmation level: Confirmed by company.

Breach confirmed

The Prosper breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

In September 2025, Prosper announced that it had detected unauthorized access to their systems, resulting in the exposure of customer and applicant information. Have I Been Pwned added this breach to its dashboard on October 16, 2025, noting that Prosper advised no evidence of unauthorized access to customer accounts and funds was found, and customer-facing operations were uninterrupted.

The data breach impacted 17.6 million unique email addresses and other specific types of data including US Social Security numbers, browser user agent details, credit status information, dates of birth, email addresses, employment statuses, government issued IDs, income levels, IP addresses, names, and physical addresses. The specific states affected by this breach have not been publicly confirmed.

While the breach occurred in September 2025, further details can emerge at a later date, and notices to affected individuals may be delayed.

Data possibly involved

Browser user agent details
Credit status information
Dates of birth
Email addresses
Increases risk of phishing attacks and account takeovers
Employment statuses
Government issued IDs
Income levels
IP addresses
Could be combined with other data for identity theft
Names
Physical addresses
Could be combined with other data for identity theft
SSN
Can be used to open fraudulent accounts and file false tax returns

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Current

Company has acknowledged the breach

Regulator Confirmed

Confirmed by regulatory authorities

Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

Case Status:

Monitoring

We're monitoring this situation for developments.

Were You Affected By This Breach?

If you are a customer or have received a data breach notification, you may submit your information as part of our ongoing investigation. Submitting your information is free and does not obligate you.

Were you in the Prosper breach? Check your email

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Check Your Risk Level

Answer a few questions to understand how this breach might affect you

Do you use Prosper?

Yes

What should I do?

Change your passwords

Update passwords for the affected service and any accounts using the same password

Enable two-factor authentication

Add an extra layer of security to your accounts

Monitor your accounts

Watch for suspicious activity on your financial and online accounts

Watch for phishing attempts

Be cautious of emails or messages claiming to be from the affected company

Consider a credit freeze

Prevent unauthorized access to your credit report

Scan your email for other exposures

Check whether this address shows up in other known breaches. Free, no account.

Get your info off data-broker sites

Data Shield files removal requests with every broker that accepts an authorized agent, and gives you the exact link or letter for the brokers that only accept requests from you.

See how Data Shield works