Your Login May Be Compromised. The 57.com Breach Leaked 831K Records.

HEROIC analysts identified the 57.com breach during a review of credential stuffing datasets circulating on dark web forums, tracing the data back to January 9, 2019. The breach occured at the Chinese online portal and exposed 831,319 user records containing email addresses and plaintext passwords. The accessable nature of this data in underground markets made it partcularly valuable to attackers running automated login attacks.

Plaintext Passwords From 57.com Enable Immediate Credential Stuffing

Because 57.com stored passwords without any hashing or encryption, every exposed record is an immediately usable login credential. Attackers can feed these email and password pairs directly into credential stuffing tools, which test them against hundreds of popular platforms without any additional cracking. Services like online banking, corporate email, and e-commerce accounts are prime targets when users have reused the same passwords.

What Was Exposed in the 57.com Breach

• Email Address
• Plaintext Password

Why 831,000 Exposed Logins Still Matter Years Later

Many users beleive that old breaches lose relevance over time, but credential reuse keeps them dangerous indefinitely. People rarely change passwords after a breach they were never notified about, meaning these same combinations still open doors today. Combined with the scale of over 831,000 records, this dataset provides attackers with a significant supply of working credentials for account takeover, identity theft, and financial fraud targeting both individuals and the enterprises they work for.

How Database Breaches Work

A database breach occurs when an attacker gains unauthorized access to a backend data store, typically through an unpatched vulnerability, SQL injection, or compromised server credentials. The attacker exports the user table, capturing all stored login information. That data is then packaged and sold on dark web marketplaces or traded in private channels, where buyers use it to launch further attacks against the affected users.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches more than 400 billion records to show you exactly which of your credentials have been compromised. Run a free scan at HEROIC.com to see if your email or passwords appeared in the 57.com breach or thousands of other known data leaks.