Combo Mix Stealer Log Leak: 29,674 Passwords Now Exposed

In March 2023, a threat actor uploaded a stealer log file labeled "Combo Mix" to a Telegram channel, exposing 29,674 records. The file pairs email addresses with plaintext passwords and the URLs those logins were used on, all collected from malware-infected devices rather than taken from any single company's systems.

Why This Combo List Is Worth Taking Seriously

The name "Combo Mix" describes exactly what this file is: a blended collection of stolen login credentials pulled together from infected devices and repackaged for distribution. It is not tied to one website or service. Instead, it contains whatever usernames and passwords the malware managed to lift from browsers, autofill fields, and saved login forms across the devices it infected.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the accounts and sites accessed

Why This Matters

These passwords were stored in plaintext, so there is no encryption a criminal needs to break before using them. That makes credential stuffing, trying the same email and password pair on dozens of other sites, fast and simple. If you reuse passwords across accounts, a single exposed login here can lead to takeover of your email, banking, or shopping accounts, opening the door to identity theft and financial fraud.

How a Stealer Log Turns Into a Combo Mix

Stealer malware usually spreads through cracked software, pirated downloads, or malicious email attachments. Once it infects a device, it silently harvests saved passwords, autofill entries, and session cookies from the browser, then exports everything into a log file. Criminals frequently merge several of these logs together into a single combo file, as is the case here, to create a larger, more valuable dataset before selling or trading it on Telegram and dark web forums.

Check If You Are Affected

Do not assume you are in the clear. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including combo lists and stealer logs like this one, and tells you instantly if you have been exposed. If your information turns up, change that password right away, update it anywhere else you reused it, and enable two-factor authentication wherever it is offered.