Every public data breach

44 disclosed this week · 26,355 on record

Facebook

Disclosed Mar 17, 201887,000,000 affectedSettled

Official notice

Data of up to 87 million Facebook users improperly shared with Cambridge Analytica

The Guardian and others revealed that a personality quiz app harvested Facebook profile data that was passed to political consultancy Cambridge Analytica; Facebook later said up to 87 million people were affected. The FTC imposed a record $5 billion penalty over privacy violations.

What is known

People affected87,000,000 (as reported by the organization)
DisclosedMar 17, 2018
AttackVendor breach
Data exposedNamesLocationOther
SectorTech · US
StatusSettled
Lawsuit or fine$5B FTC penalty (2019) (about $5B)

Sources

Notices filed

Other breaches at Facebook

History of this record
records2026-09-25
empty to 50000000by seedSource
Added2026-09-25
First recordedby seedSource

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

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