ShellCodeX Breach Report
Prosper Data Breach
prosper.com
Verified breach
Accounts exposed
17,605,276
Breach date
01 Sep 2025
Added to tracker
16 Oct 2025
Data classes
10
What happened
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.
Exposed data
Browser user agent details
Credit status information
Dates of birth
Email addresses
Employment statuses
Government issued IDs
Income levels
IP addresses
Names
Physical addresses
Recommended actions
- Watch for targeted phishing emails referencing Prosper — attackers weaponise breach data quickly.
- Exposed identity data raises identity-theft risk — consider credit monitoring or a credit freeze.
- Check whether your email address appears in this breach on haveibeenpwned.com.
Am I affected?
Check whether your email address appears in this breach.
Check on HIBP
