The 0.554 Hotmail Combolist Put 555 Stolen Login Pairs Online

HEROIC analysts found a combolist labeled "0.554 HOTMAIL" shared by a Telegram user, tied to a leak date of October 2024. The file contained 555 records pairing email addresses with plaintext passwords and the URLs each credential was used on, primarily tied to Hotmail accounts. Why this is dangerous: because the passwords are stored in plaintext, anyone who obtains this file can attempt to log in to these accounts right away, with no cracking or decryption required. That makes the data usable immediately by anyone who gets a copy of it. What was exposed: email addresses, plaintext passwords, and associated URLs showing where each set of credentials was used. Why this matters: email accounts are often used to reset passwords for other services, so a compromised Hotmail account can open the door to a person's other accounts. If any of these 555 people reused their password elsewhere, attackers can use the same credentials for credential stuffing, which can lead to account takeover and identity theft. How combolists like this one work: a combolist bundles usernames or email addresses with passwords, typically gathered from earlier breaches, malware infections, or manual scraping, then labeled and shared or sold on Telegram channels and dark web forums. Even smaller combolists like this one circulate the same way as larger files, often traded alongside other leaked data. Check if you are affected: if you use a Hotmail account, it's worth checking whether your email appears in this leak. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records so you can quickly find out and take action if needed.