Data breach
China Software Developer Network: a data breach
In 2011, the China Software Developer Network (CSDN) suffered a data breach that exposed over 6M user records . The data included email addresses alongside usernames and plain text passwords.
The record
- Organisation
- China Software Developer Network →
- Identity
- China Software Developer Networkidentified by its domain in a verified breach record
- Records affected
- 6,414,990 records
- Data exposed
- Email addresses, Passwords, Usernames
- Sector
- Not recorded
- Occurred
- 2011-12-21
- Disclosed
- 2025-11-27
- First recorded here
- 2026-09-09
Fastnexa security experts
Worried the same could happen to your company?
If you are a customer or supplier of China Software Developer Network, or work in the same industry, a Fastnexa security expert can tell you what this means for your data and test whether the same attack would work on you.
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Sources (1)
One source so far.
- Have I Been Pwned ↗First reported
2025-11-27