Every public data breach

44 disclosed this week · 26,355 on record

Equifax

Disclosed Sep 7, 2017147,000,000 affectedSettled

Official notice

2017 breach of 147M people; up to USD 700M FTC/CFPB/states settlement

Attackers exploited an unpatched web application flaw at Equifax between May and July 2017 and stole names, Social Security numbers, birth dates, addresses and some payment card records of about 147 million people. Equifax agreed to pay at least USD 575M and up to USD 700M to the FTC, CFPB and 50 states and territories, and was fined GBP 500,000 by the UK ICO.

What is known

People affected147,000,000 (as reported by the organization)
DisclosedSep 7, 2017
DiscoveredJul 29, 2017
HappenedMay 13, 2017
AttackHacking
Data exposedNamesSocial Security numbersDates of birthAddressesGovernment IDsPayment cards
SectorFinance · US
StatusSettled
Lawsuit or fineUSD 575M to 700M FTC/CFPB/states settlement (July 2019); GBP 500,000 ICO fine (Sept 2018) (about $700M)

Sources

Notices filed

Other breaches at Equifax

History of this record
notice_affected2026-09-25
empty to or-doj: 143000000 (restored: the portal's own figure)by correctionSource
notice_affected2026-09-25
or-doj: 143000000 to by correctionSource
source2026-09-25
empty to https://www.maine.gov/ag/sites/maine.gov.ag/files/docs/Data%20breach%20spreadsheet%208-1-2021%20through%2012-5-2018%20REDACTED.xlsxby backfillSource
source2026-09-25
empty to https://www.in.gov/attorneygeneral/consumer-protection-division/id-theft-prevention/files/DB-Year-to-date-Report-2017.pdfby backfillSource
fine_usd2026-09-25
575000000 to 700000000by seedSource
lawsuit2026-09-25
At least $575M, up to $700M, settlement with FTC, CFPB and 50 states and territories (2019) to USD 575M to 700M FTC/CFPB/states settlement (July 2019); GBP 500,000 ICO fine (Sept 2018)by seedSource
summary2026-09-25
Equifax said criminals exploited a US website application vulnerability and accessed names, Social Security numbers, birth dates, addresses and some driver's license numbers, plus card numbers for about 209,000 people. It first reported 143 to Attackers exploited an unpatched web application flaw at Equifax between May and July 2017 and stole names, Social Security numbers, birth dates, addresses and some payment card records of about 147 million people. Equifax agreed to pay at by seedSource
title2026-09-25
Web application flaw exposes personal data of 143 million US consumers to 2017 breach of 147M people; up to USD 700M FTC/CFPB/states settlementby seedSource
status2026-09-25
confirmed to settledby seedSource
fine_usd2026-09-25
empty to 575000000by seedSource
lawsuit2026-09-25
empty to At least $575M, up to $700M, settlement with FTC, CFPB and 50 states and territories (2019)by seedSource
sector2026-09-25
tech to financeby seedSource
data_types2026-09-25
[] to ["names","ssn","dob","addresses","government-id","payment-card"]by seedSource
records_basis2026-09-25
empty to organizationby seedSource
records2026-09-25
empty to 147000000by seedSource
summary2026-09-25
empty to Equifax said criminals exploited a US website application vulnerability and accessed names, Social Security numbers, birth dates, addresses and some driver's license numbers, plus card numbers for about 209,000 people. It first reported 143by seedSource
title2026-09-25
empty to Web application flaw exposes personal data of 143 million US consumersby seedSource
attack2026-09-25
unknown to hackingby backfillSource
discovered2026-09-25
empty to 2017-07-29by 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 Equifax