All Breaches
December 1, 2015 Verified Anime Forum / Community

Nihonomaru Data Breach

The Nihonomaru data breach is related to the exposure of user accounts belonging to an anime community forum in late 2015. The scope is approximately 1,697,282 accounts.

1.7 Million
Reported Records
4
Data Types
Critical
Severity
Yes
Verification

Exposed Data Types

4
Email addresses
IP addresses
Passwords
Usernames

Additional Information

Added DateAugust 30, 2016
Breach DateDecember 1, 2015
Domainnihonomaru.net
SourceThird party breach
Last Content UpdateJuly 18, 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 NameNihonomaru
SectorAnime Forum / Community
CountryGlobal
Websitenihonomaru.net

Risk Level

Critical

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

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