ConfirmedData 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

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

Sources (1)

One source so far.

  1. Have I Been PwnedFirst reported

    2025-11-27