Our Analysts Found a HOTMAIL Combolist With 1,476 Stolen Logins

HEROIC analysts found a combolist simply named HOTMAIL circulating on a Telegram channel on January 19, 2025. The file contains 1,476 records of email addresses, plaintext passwords, and the login URLs those accounts are tied to. Why This Is Dangerous: A generic name like this often means the file was pulled together from multiple sources and shared widely without much attention from security researchers or the media. That lack of visibility can give attackers a longer window to use these credentials before the people affected ever find out. What Was Exposed: - Email addresses - Plaintext passwords - Associated login URLs Why This Matters: With 1,476 working Hotmail logins in plaintext, anyone who reused their password on another account is at risk. Attackers run credential stuffing attacks using exactly this kind of file, testing each email and password against banking sites, shopping accounts, and other email providers, which can quickly turn into account takeover, financial fraud, or identity theft. How Combolist Leaks Work: A combolist gathers stolen or previously leaked email and password pairs into one plain text file. These files are commonly built from older data breaches, malware infections on personal devices, or recycled leak dumps, then relabeled with something generic, like just the email provider's name, and shared or sold on Telegram. Check If You Are Affected: Because this file circulated without much public attention, checking directly is the fastest way to know if you were affected. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, so you can confirm in seconds whether your Hotmail login was part of this leak.