17.6 Million Logins Surface in ULP Private Lines 3 ArhontCorp File

HEROIC analysts also tracked ULP Private Lines 3 TG ArhontCorp, another large combolist from the same Telegram upload on 28-Aug-2026. This file holds 17,627,578 records pairing email addresses with plaintext passwords and the URLs those logins belong to. Given how many accounts are listed in plain, usable text, it is worth checking your own exposure right away.

Why Size Changes How This File Gets Used

A file holding over 17 million entries is not something an attacker works through by hand. It gets fed straight into automated tools built to try thousands of logins per minute against a target site, turning a single download into an attack on many accounts at once.

The Login Data Exposed in ULP Private Lines 3 TG ArhontCorp

• Email Addresses
• Plaintext Password
• URLs

The Accounts This File Can Reach Beyond Its Own List

Because combolists this large pull from many sources, the odds of password reuse inside them are high. Every reused password an automated tool confirms becomes a new foothold for the attacker, often on a completely different service than where the credential first leaked.

How a File of This Size Comes Together

Large combolists like this one are usually assembled from a mix of older breaches and stealer logs rather than a single event. The entries get merged, deduplicated, and formatted consistently so the resulting file can be loaded directly into credential stuffing tools. The consistent formatting is deliberate, since it lets the same automated tools run against this file without any extra setup, which speeds up how quickly stolen logins get tested.

Make Sure Your Email Is Not on This List

Scan your email to check it against this file and every other breach HEROIC tracks. If you find a match, update that password immediately, including on any other account, personal or professional, where you have used it before, and avoid using it again anywhere.