Inside the Mix Part4 2 Combolist: How 187,903 Logins Got Leaked

HEROIC analysts found a combolist named Mix Part4 2 uploaded to a Telegram channel, first leaked on 9 March 2023. The file contains 187,903 records made up of email addresses, plaintext passwords, and the URLs tied to each set of credentials. Why This Is Dangerous: A file of this size gives attackers nearly 188,000 ready-to-use logins in one download. Because none of the passwords are encrypted, there is no technical barrier between having the file and accessing the accounts inside it, only whether the victim reused that password anywhere else. What Was Exposed: - Email addresses and usernames - Plaintext passwords - URLs showing where each credential pair was originally used Why This Matters: Combolists this size are traded and reused across the cybercriminal underground for months or years after they first appear. Every reused password inside it is a potential entry point for credential stuffing, account takeover, and downstream identity theft or financial fraud. How a Combolist Like This Gets Built: Files like Mix Part4 2 are assembled by combining credentials pulled from several older breaches, phishing kits, and malware logs into one master list, then labeled and shared in parts across Telegram channels that specialize in trading stolen data. The "Part4 2" naming suggests this file is one piece of a larger series being distributed the same way. Check If You Are Affected: HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including combolists like this one. Run a scan now and update any password you have used on more than one account.