Identity Theft Risk Grows From the Qiannao Breach: 642K Records

HEROIC analysts identified the Qiannao breach while monitoring credential aggregation activity tied to Chinese cloud platform datasets. In January 2012, Qiannao, a Chinese cloud computing service, was breached and 642,697 user records were exposed. The stolen data included email addresses, usernames, and plaintext passwords that continue to circulate in credential stuffing lists over a decade later.

Why the Qiannao Breach Is Dangerous

Qiannao stored passwords in plaintext, which means attackers who obtained this database had immediate, working credentials with no cracking required. Cloud service users frequently share login credentials across connected platforms, meaning a single breached account can provide access to file storage, communication tools, and linked business systems. The combination of email addresses, usernames, and plaintext passwords makes this dump highly actionable for targeted attacks.

What Was Exposed in the Qiannao Leak

• Email addresses
• Usernames
• Plaintext passwords

Why This Qiannao Data Puts You at Risk

Identity theft becomes easier when attackers have verified email and password combinations. With Qiannao credentials, a threat actor can attempt to access email accounts, which serve as the master key to every other platform, triggering password resets on banking, social media, and cloud storage accounts. Credential stuffing tools run these pairs automaticaly across hundreds of sites, meaning your exposure extends far beyond the Qiannao platform itself. Any account where you reused that password is at serous risk.

How a Database Breach Works

A database breach occurs when an attacker exploits vulnerabilities in a web application or server to access the underlying data store and extract user records. In the case of Qiannao, plaintext password storage meant the attackers walked away with immediately usable credentials, rather than hashed values that require additonal cracking. These datasets are then compiled, traded, and merged into aggregated credential lists that remain in active use for years after the original incident.

Check If Your Data Was Exposed

HEROIC operates one of the world's largest breach databases, covering more than 400 billion leaked records. Use HEROIC's free breach scanner to check if your email address or credentials appeared in the Qiannao leak or thousands of other breaches in our database.