Our Analysts Found the Edu C Combolist With 29,288 Logins on Telegram

HEROIC analysts came across a combolist named Edu C circulating in a Telegram channel in July 2026. The file contains 29,288 sets of email addresses, plaintext passwords, and linked URLs, likely aimed at education-related accounts based on its naming. Why This Is Dangerous: Every credential in this file is stored as plaintext, meaning an attacker can use it immediately without needing to break any encryption. That makes it simple for anyone who downloads the file to start testing logins right away. What Was Exposed: - Email addresses - Plaintext passwords - URLs tied to each account Why This Matters: A list of nearly 30,000 credentials gives attackers plenty of material for automated credential stuffing attacks, where stolen logins are tested against many other websites at once. If you reuse a password anywhere in your email, school, or personal accounts, this kind of leak can turn into account takeover or identity theft even if you were never a customer of the original targeted service. How a Combolist Like This Works: Combolists are compiled by pulling login data from multiple sources, old breaches, phishing pages, and malware logs, then merging them into a single searchable file. Once assembled, they get uploaded to Telegram channels like this one, where anyone can download them for free or in exchange for a small fee. Check If You Are Affected: Use HEROIC's free breach scanner to check your email against more than 400 billion exposed records and find out whether your login details were included in the Edu C combolist or any other leak.