Mix Part3 18 Leak: 277,089 Stolen Login Credentials Exposed

HEROIC analysts identified a combolist known as "Mix Part3 18," uploaded by a Telegram user and dated March 23, 2023. The file contains 277,089 records pairing email addresses with plaintext passwords, along with the URLs of the sites those credentials were originally used on.

Why the Mix Part3 18 Leak Is Dangerous

Because the passwords in this combolist are stored in plaintext, anyone who downloads the file can immediately try each email and password pair on other websites, no cracking or decryption required. Paired with the URLs included in the dump, attackers already know which service each login was originally used for, making it faster to target specific accounts such as email, banking, or shopping logins.

What Was Exposed in Mix Part3 18

• Email addresses
• Plaintext passwords
• URLs tied to each set of credentials

Why This Matters for the 277,089 Affected Accounts

Most people reuse passwords across multiple accounts. When a plaintext password tied to your email address is circulating publicly, attackers can run credential stuffing attacks, automatically testing the same email and password combination across banking, social media, and email platforms. A single reused password can lead to account takeover, identity theft, or financial fraud if the credentials unlock a sensitive account.

How This Combolist Was Built

A combolist is a compiled file that merges login credentials gathered from multiple sources, often previous breaches, malware infections, or phishing campaigns, into a single list formatted as email and password pairs. Unlike a single company's breach, a combolist like Mix Part3 18 can combine data from many different origins, which is why the attached URLs vary widely and the original source of each credential pair isn't always clear. Combolists like this one are frequently shared and resold on Telegram channels and dark web forums, making them a popular tool for automated login attacks.

Check If You Are Affected

With 277,089 records already circulating, the safest step is to find out whether your email address is part of this leak or any other exposure. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including combolists like Mix Part3 18, so you can see your exposure and take action before attackers do.