Your Data May Be in the Mix: 337 Login Credentials Leaked

In February 2025, HEROIC analysts spotted a small combolist file simply named mix uploaded to a Telegram channel. Despite its generic name, the file contains 337 records pairing email addresses with plaintext passwords and the web addresses those logins belonged to. Why This Is Dangerous: A small file size does not mean small risk. Every one of these 337 credential pairs is stored in plain, readable text, meaning anyone who downloads the file can start testing the logins immediately, with no password cracking involved. What Was Exposed: - Email addresses - Plaintext passwords - URLs tied to each login Why This Matters: Files like mix are traded and combined with dozens of others to build larger attack lists used for credential stuffing, the practice of automatically testing stolen logins across many sites at once. If any of these 337 accounts reused a password elsewhere, those other accounts are now at risk too. How This Combolist Works: Combolists are assembled by pulling credentials from older breaches, stealer malware logs, and phishing kits, then combining them into a single text file for easy distribution. The mix file appears to be one of these smaller batches, likely destined to be merged with other lists before being sold or shared further. Check If You Are Affected: You can check whether your email appears in this leak or any of the other 400 billion plus records in HEROIC's database with a free breach scan.