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Prosper breach exposes 17.6 million users
Compromised admin credentials gave access to SSNs and income data.
- Organisation
- Prosper
- Disclosed
- 20 October 2025
- Affected
- 17,600,000
- Data
- Names, SSNs, income details
- Attacker
- Unknown
- Severity
- critical
- Region
- Global
- Source
- CM Alliance monthly roundup ↗
Cite this
Nuffield Consulting, “Prosper breach exposes 17.6 million users”, The Daily Tech Wire outage & breach log, 20 Oct 2025. https://techwire.nuffieldconsulting.com/incidents/2025-10-20-prosper-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: CM Alliance monthly roundup, https://www.cm-alliance.com/cybersecurity-blog/october-2025-biggest-cyber-attacks-ransomware-attacks-data-breaches.
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