Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Prosper Marketplace

Disclosed Nov 26, 20183,115 affectedConfirmed

Official notice

What is known

People affected3,115 (as reported by the organization)
DisclosedNov 26, 2018
HappenedOct 3, 2018
AttackNot stated
Data exposedNot stated
SectorFinance · US
StatusConfirmed

Sources

Official noticeoag.ca.gov
California Attorney General breach notice: Prosper Marketplace
Official noticein.gov
Indiana Attorney General 2018 data breach report: Prosper Marketplace

Notices filed

Residents of CANov 26, 2018
California AGCount not stated
Residents of INNov 26, 2018
Indiana AG41 people

Other breaches at Prosper Marketplace

Hacking breachHacking exposed names, credentials and tokens, Social Security numbers, government IDs, payment cards, financial details and dates of birth. Reported to the California AG.13M affectedFinanceUSDec 9, 2025
History of this record
sector2026-09-25
other to financeby backfillSource
records_basis2026-09-25
empty to organizationby backfillSource
records2026-09-25
empty to 3115by backfillSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (California AG), confirmed by California AG. Record counts are as reported. Not legal advice.

Everything about Prosper Marketplace