The ARCEUSULP Leak Contains 46,754 Working Password Pairs

On June 20, 2026, HEROIC's dark web monitoring team found a combolist circulating on Telegram titled "ARCEUSULP 256 148522." The file holds 46,754 records, each combining an email address or username with a plaintext password and the URL the credentials were used on.

Why the ARCEUSULP 256 148522 Leak Is Dangerous

Every password in this file sits in plaintext, meaning anyone who opens it can read the login instantly. Paired with the matching email and site URL, that is enough for an attacker to sign into an account without any guesswork.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs tied to each login

Why This Matters for Your Other Accounts

If you have ever reused a password, this is the risk that catches up with you. Attackers take combolists like this one and run the same email and password combination against banks, email providers, and social platforms in bulk, a technique called credential stuffing. Any account sharing that password is exposed.

How This Combolist Was Built

A combolist is a simple text file pairing logins with passwords, one per line. Criminals build them by combining data pulled from older breaches, phishing kits, and malware infections, then strip out duplicates so what is left is more likely to still be active. Files like ARCEUSULP 256 148522 move quickly through Telegram groups once uploaded, often reposted and repackaged by multiple users.

Check If You Are Affected

HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including this one. Run a quick scan to find out if your credentials showed up in this leak and get straightforward steps to lock your accounts down.