All Breaches
February 1, 2012 Verified Sensitive Record Technology

CNZZ Data Breach

The CNZZ data breach is associated with the exposure of a user database belonging to the China-based web analytics platform.

945.1 Thousand
Affected Accounts
3
Data Types
High
Severity
Yes
Verification

Exposed Data Types

3
Usernames
Email addresses
Hashed passwords

Additional Information

Added DateAugust 1, 2026
Breach DateFebruary 1, 2012
Domaincnzz.com
SourceContemporary Chinese media reporting, breach-catalog metadata and archived CNZZ database metadata
Last Content UpdateAugust 1, 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 NameCNZZ
SectorTechnology
CountryChina
Websitecnzz.comArchived site

Risk Level

High

The reported impact exceeds 100 thousand and falls within the high severity band.

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