Every public data breach

44 disclosed this week · 26,355 on record

Facebook

Disclosed Apr 3, 2021533,000,000 affectedSettled

Official notice

Scraped dataset of 533M Facebook users posted online; Irish DPC fine of EUR 265M

A dataset of phone numbers, Facebook IDs, names, locations, birth dates and some emails covering over 533 million users was posted on a hacking forum in April 2021; Facebook said it came from scraping via contact importer features. Ireland's DPC found Article 25 data protection by design failures and fined Meta EUR 265M.

What is known

People affected533,000,000 (as reported by the organization)
DisclosedApr 3, 2021
HappenedAug 1, 2019
AttackScraping
Data exposedDates of birthEmailsEmploymentLocationNamesPhone numbers
SectorTech · US
StatusSettled
Lawsuit or fineEUR 265M Irish DPC fine (Nov 2022) (about $275M)
Check your emailHave I Been Pwned

Sources

Notices filed

Other breaches at Facebook

History of this record
status2026-09-25
confirmed to settledby seedSource
fine_usd2026-09-25
empty to 275000000by seedSource
lawsuit2026-09-25
empty to EUR 265M Irish DPC fine (Nov 2022)by seedSource
summary2026-09-25
Data on more than 530 million Facebook users, mainly phone numbers linked to profiles, was published online; Facebook said it was scraped via its contact importer before September 2019. to A dataset of phone numbers, Facebook IDs, names, locations, birth dates and some emails covering over 533 million users was posted on a hacking forum in April 2021; Facebook said it came from scraping via contact importer features. Ireland'by seedSource
title2026-09-25
Scraped data of 533 million Facebook users posted free online to Scraped dataset of 533M Facebook users posted online; Irish DPC fine of EUR 265Mby seedSource
source_type2026-09-25
aggregator to companyby seedSource
source_url2026-09-25
https://haveibeenpwned.com/Breach/Facebook to https://about.fb.com/news/2021/04/facts-on-news-reports-about-facebook-data/by seedSource
status2026-09-25
disclosed to confirmedby seedSource
verified_by2026-09-25
empty to researchby seedSource
verified2026-09-25
0 to 1by seedSource
country2026-09-25
empty to USby seedSource
attack2026-09-25
unknown to scrapingby seedSource
records_basis2026-09-25
hibp to organizationby seedSource
records2026-09-25
509458528 to 533000000by seedSource
disclosed2026-09-25
2021-04-04 to 2021-04-03by seedSource
summary2026-09-25
In April 2021, a large data set of over 500 million Facebook users was made freely available for download . Encompassing approximately 20% of Facebook's subscribers, the data was allegedly obtained by exploiting a vulnerability Facebook adv to Data on more than 530 million Facebook users, mainly phone numbers linked to profiles, was published online; Facebook said it was scraped via its contact importer before September 2019.by seedSource
title2026-09-25
empty to Scraped data of 533 million Facebook users posted free onlineby seedSource
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Have I Been Pwned), confirmed by Research. Record counts are as reported. Not legal advice.

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