All Breaches
December 21, 2011 Verified Developer Community

China Software Developer Network Data Breach

China Software Developer Network data breach is a verified record from December 2011 associated with csdn.net, a large developer community known as CSDN.

6.4 Million
Reported Records
3
Data Types
Critical
Severity
Yes
Verification

Exposed Data Types

3
Email addresses
Passwords
Usernames

Additional Information

Added DateNovember 27, 2025
Breach DateDecember 21, 2011
Domaincsdn.net
SourceThird-party breach
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 NameChina Software Developer Network
SectorDeveloper Community
CountryChina
Websitecsdn.net

Risk Level

Critical

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

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