MAIL ACCESS 28K MIX VALID 100 Telegram Leak: 2025 Data Surfaces Now

What HEROIC Analysts Found in This Combolist Leak

HEROIC's dark web monitoring team identified a file called "MAIL ACCESS 28K MIX VALID 100" that a Telegram user uploaded, dated to September 16, 2025. The file is a combolist, a compiled batch of stolen login credentials, containing 12,117 records that pair email addresses with plaintext passwords and the URLs of the accounts they unlock.

Why This Leak Is Dangerous

The passwords in this file are stored in plaintext, meaning anyone who gets a copy can read every password immediately, no cracking required. Because each entry also lists the URL tied to the login, an attacker can open that exact site and try the credentials right away. There is no guessing involved, just a direct match between an email, a password, and the place to use it.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linked to each account

Why This Matters

Most people reuse the same password across several accounts. When a combolist like this one circulates, attackers run the exposed email and password pairs against banking sites, email providers, and social media platforms in a technique called credential stuffing. Any account that shares the leaked password is at risk of takeover, which can lead to identity theft or financial fraud if the attacker reaches a bank, payment app, or inbox that can be used to reset other accounts.

How Combolists Like This One Work

A combolist is simply a text file that bundles previously stolen usernames or emails together with their matching passwords, often pulled from older breaches, malware infections, or phishing campaigns and then repackaged for resale or free distribution. Telegram has become a common place for this kind of file to circulate because it lets uploaders reach a large audience of buyers and other criminals quickly and with little oversight. The value of a combolist comes from its accuracy, so criminals often verify a portion of the credentials before sharing or selling the file, which is likely how this one was marked as containing valid entries.

Check If You Are Affected

If you have ever used an email address for an account tied to this leak, it is worth checking now rather than waiting. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, including combolists like this one, to tell you quickly whether your information has been exposed. Run a free scan, and if your email turns up, change the affected password immediately and turn on two-factor authentication wherever it is offered.