Every public data breach

Disclosed this week44On record26,355

44 disclosed this week · 26,355 on record

Prosper

Disclosed Nov 26, 20183,115 affectedConfirmed

Official notice

What is known

People affected3,115 (as reported by the organization)
DisclosedNov 26, 2018
DiscoveredOct 15, 2018
HappenedOct 3, 2018
AttackNot stated
Data exposedNamesSocial Security numbersGovernment IDsPayment cardsFinancial
SectorFinance · US
StatusConfirmed

Sources

Official noticemaine.gov
Maine Attorney General breach notice archive: Prosper

Notices filed

Residents of MENov 26, 2018
Maine AG18 people

Other breaches at Prosper

Hackers steal data of 17.6 million Prosper accounts including SSNsHacking exposed financial details, dates of birth, emails, employment records, government IDs, IP addresses, names, addresses and Social Security numbers.Hacking18M accountsFinanceUSSep 17, 2025
History of this record
Added2026-09-25
First recordedby backfillSource

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

Everything about Prosper