The ARCEUSULP 126 Combolist Leaked 865,697 Email and Password Pairs

In June 2026, HEROIC analysts identified a combolist file labeled "ARCEUSULP 126" after a Telegram user uploaded it to a channel used for trading stolen login data. The file is tied to a leak date of June 20, 2026, and contains 865,697 records, each pairing an email address with a plaintext password and a URL showing which site the credentials unlock. Why the ARCEUSULP 126 Combolist Is Dangerous Because the passwords in this file are stored as plaintext, anyone who downloads it can read every credential immediately, with no cracking or decoding required. Paired with an email address and the URL of the site each login worked on, an attacker has everything needed to attempt to open that account right now, at scale, across all 865,697 records. What Was Exposed in the ARCEUSULP 126 File Email addresses used as account usernames Plaintext passwords tied to those email addresses URLs indicating which websites or services the credentials unlock Why This Combolist Matters for Your Other Accounts Most people reuse the same password across several accounts. If your email and password appear in this combolist, attackers can feed the same pair into automated tools and test it against banking sites, shopping accounts, and social media logins, a technique known as credential stuffing. A single successful match can lead to account takeover, financial fraud, or identity theft, often before you notice anything is wrong. How a Combolist Like ARCEUSULP 126 Gets Built A combolist is a compiled set of email-and-password pairs, typically assembled from older breaches, phishing pages, or malware infections and repackaged for free distribution or resale on platforms like Telegram. Once a file like ARCEUSULP 126 is in circulation, criminals load it into automated login tools that test each pair against dozens of websites, flagging every working account for further exploitation. Check If Your Email Was Exposed You do not have to wonder whether your information is part of this or any other leak. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including combolists like ARCEUSULP 126, so you can find out in seconds and change your password before someone else uses it.