All Breaches
June 22, 2020 Verified Sensitive Record AI data services / Online workforce

Appen 2020 Data Breach

The 2020 Appen data breach is the June 22, 2020 incident affecting Appen’s data-labelling and online-workforce platform.

5.9 Million
Reported Records
6
Data Types
Critical
Severity
Yes
Verification

Exposed Data Types

6
Email addresses
Employers
IP addresses
Names
Passwords with unresolved storage representation
Phone numbers

Additional Information

Added DateJuly 30, 2020
Breach DateJune 22, 2020
Domainappen.com
SourceAuthenticated Appen workforce-platform corpus
Last Content UpdateJuly 29, 2026

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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Company Information

Company NameAppen
SectorAI data services / Online workforce
CountryUnited States
Websiteappen.com

Risk Level

Critical

The reported impact exceeds 1 million and falls within the critical severity band.

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