The Hotmail_1 Dump: 1,073 Stolen Login Credentials Surfaced

In October 2024, HEROIC analysts identified a stealer log named "HOTMAIL_1," uploaded by a Telegram user, exposing 1,073 records made up of email addresses, plaintext passwords, and the URLs each login was used on.

A Small File Name, a Real List of Working Logins

The generic, almost placeholder name "HOTMAIL_1" suggests this file may be one of several similar batches an attacker is producing and numbering as they go. That kind of naming often points to an ongoing operation rather than a single one-off leak, meaning more files targeting the same email provider could follow.

What Was Exposed

• Hotmail email addresses
• Plaintext passwords, stored with no encryption
• URLs identifying the exact login page each credential belongs to

Why This Matters

Every one of the 1,073 records in this file is a complete, working credential pair. For the people affected, that means direct exposure to account takeover on their email, and if the same password protects other accounts, a real risk of credential stuffing and financial fraud as well.

How Numbered Stealer Logs Like This One Get Produced

Stealer malware infects a device and silently records every login typed into a browser, then sends the data back to whoever controls the infection. Operators running an ongoing campaign often split their stolen data into smaller, sequentially named batches, like "HOTMAIL_1," rather than releasing one giant file, making it easier to distribute and sell the data in pieces over time on Telegram.

Check If You Are Affected

If you use a Hotmail account, it is worth checking your exposure now, especially since more files like this one may follow. HEROIC's free breach scanner checks your email address against a database of more than 400 billion breached and leaked records, so you can confirm your exposure in seconds.