If You Reuse Passwords, the StarX ULP Leak Should Worry You

On 8 February 2026, HEROIC analysts identified a combolist file named StarX_ULP_08.02.2026_Part_1 uploaded by a Telegram user. The file contains 6,485,037 records of email addresses, plaintext passwords, and the URLs each credential pair was tied to, packaged as what is known as a ULP file, short for URL:Login:Password, a format built specifically to make stolen credentials easy to plug into automated attack tools.

Why the StarX ULP Format Should Worry You

A ULP file is designed for speed. Instead of a raw list of emails and passwords, it pairs each credential with the exact web address it belongs to, so attackers can load the file straight into automated login tools without any extra work. If you have ever reused a password across more than one account, and most people have, this format makes it trivial for someone to find out where else that same password might work.

What Was Exposed in the StarX ULP Leak

• Email addresses
• Plaintext passwords
• URLs identifying the exact site each login belongs to

Why This Matters for the 6.48 Million Accounts Involved

ULP files like this one are purpose-built for credential stuffing, where automated software feeds each login and URL pair directly into the matching website's sign-in page. Because the format removes the guesswork of figuring out where a password might work, accounts are compromised faster and at greater scale than with a plain combolist. Anyone in this dataset who reuses passwords faces a real risk of account takeover, identity theft, or financial fraud carried out with their own stolen credentials.

How a ULP Combolist Like StarX Gets Built

ULP stands for URL, Login, Password, a structured format that criminals prefer because it eliminates manual sorting. Whoever assembled the StarX file pulled credentials together from earlier breaches or malware infections, matched each one to the site it was used on, and organized the whole set for immediate use in credential stuffing software. Files in this format are commonly bought, sold, and shared on Telegram channels dedicated to stolen data.

Check If Your Login Was in the StarX Leak

If your password shows up in a file like this, every account where you reused it becomes a target. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including this StarX dump, so you can find out immediately whether your credentials were exposed and change them before someone else does.