Researchers Trace Pep4teens.de Leak to 1,182 Exposed Accounts

HEROIC analysts identified a combolist file uploaded to Telegram on 29 July 2026, tied to the pep4teens.de domain. The file contained 1,182 records pairing email addresses with plaintext passwords, along with associated URLs tied to the accounts. That is over a thousand working logins from a single upload now available to anyone who finds the file.

Why This Is Dangerous

Because the passwords in this file are plaintext, no cracking is needed to use them. Anyone who obtains the file can immediately try each email and password pair against pep4teens.de or any other site where the same credentials might be reused, with nothing standing in the way.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated account URLs

Why This Matters

People frequently reuse the same password across email, banking, and social accounts. Attackers take leaked pairs like these and run them against other services through credential stuffing. With over 1,100 records in this dataset, even a modest success rate can lead to multiple account takeovers, identity theft, and financial fraud far beyond the original pep4teens.de account.

How Combolist Leaks Work

A combolist is a compiled text file of email and password pairs gathered from earlier breaches, phishing attacks, or malware infections, then packaged together and shared on platforms like Telegram. It does not require hacking pep4teens.de directly. It only requires collecting already-stolen credentials tied to the site and repackaging them, which is why these files can circulate quickly with little detail about their true origin.

Check If You Are Affected

If you use pep4teens.de or any similar service and want to know if your credentials are exposed, HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records and tells you in seconds what to do next.