The MIX_1 Combolist Leak Targets Everyday Users, 13,823 Logins

HEROIC analysts identified a combolist named MIX_1 that a Telegram user uploaded in October 2024. The file contains 13,823 records pairing email addresses with plaintext passwords, along with the URLs of the sites each credential was used on. Unlike combolists tied to a single breach or platform, MIX_1 pulls credentials together from a range of unrelated sites, so the people affected are ordinary internet users rather than customers of one particular company. Why This Is Dangerous: Every password in this file is stored in plaintext, so anyone who downloads it can use the email and password pairs right away, with no cracking or guessing required. What Was Exposed: - Email addresses - Plaintext passwords - URLs tied to each account Why This Matters: Because the credentials in MIX_1 come from many different sites, an attacker running credential stuffing against one site can just as easily try the same email and password against banking, email, or shopping platforms. If a password has been reused anywhere, that overlap is what leads to account takeover, identity theft, and financial fraud. How a Mix Combolist Like This Gets Made: A mix combolist is deliberately generic. Instead of focusing on one breached company, criminals combine login data pulled from many different phishing pages, malware infections, and older leaks into a single file, then label it as a mix to signal broad coverage rather than a niche target. These files are shared or sold on Telegram channels precisely because they can be used against a wide range of sites. Check If You Are Affected: HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including combolists like this one. Run a scan to see if your credentials are part of this exposure and get clear steps to secure your accounts.