4.5K Mix Mail Access Combolist Leak Exposes 4,692 Email Logins

4.5K Mix Mail Access: 4,692 Email Logins Leaked in a Telegram Combolist

On 26-Mar-2026, HEROIC analysts identified a combolist named "4.5K Mix Mail Access" circulating on Telegram. The file contained 4,692 records, each pairing an email address with a plaintext password and the URL of the login page it belongs to.

Why This Is Dangerous

Because the passwords in this file are stored in plaintext and matched to specific URLs, attackers do not need to crack anything or guess where a credential belongs. They can load the list directly into automated login tools and start testing thousands of accounts within minutes of getting their hands on it.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs identifying the site tied to each credential pair

Why This Matters

A combolist of this size is large enough to be attractive for mass credential-stuffing runs, where attackers use software to try every email and password combination against major email providers, banking portals, and shopping sites. Anyone whose email and password appear in this list and who reused that password elsewhere is at risk of account takeover, identity theft, or financial fraud.

How Combolists Work

A combolist is a compiled file of email-and-password pairs, often pulled from stealer malware logs, older breaches, or phishing campaigns and repackaged for sale or free distribution on Telegram and dark web forums. Mixed lists like "4.5K Mix Mail Access" combine credentials from a variety of sources into a single file, which is why the origin of any one record inside it can be difficult to trace.

Check If You Are Affected

If your email address is one of the 4,692 records in this leak, you deserve to know before an attacker finds out first. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, so you can act fast and change any passwords you have reused.