All Breaches
February 28, 2013 Verified Social networking and microblogging platform

Tumblr Data Breach

The Tumblr data breach is a large-scale social platform security incident that occurred in February 2013 and affected 65,469,298 accounts.

65.5 Million
Reported Records
2
Data Types
Critical
Severity
Yes
Verification

Exposed Data Types

2
Email addresses
Passwords

Additional Information

Added DateMay 29, 2016
Breach DateFebruary 28, 2013
Domaintumblr.com
SourceVerified breach record
Last Content UpdateJuly 19, 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 NameTumblr
SectorSocial networking and microblogging platform
CountryUnited States
Websitetumblr.com

Risk Level

Critical

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

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