Hotmail Users Targeted: The 1.9K Combo List Leak Exposed Passwords

What HEROIC Analysts Found

On August 2, 2026, HEROIC analysts identified a combolist titled 1.9K Hotmail Combo list Full Valid, uploaded by a Telegram user. The file contains 1,916 records, each combining an email address with a plaintext password and the URL of the associated login page.

Who This Leak Targets

As the name suggests, this combolist was built specifically around Hotmail accounts. Rather than a random scrape of the internet, it is a curated batch of Hotmail email addresses and passwords, labeled Full Valid to indicate the credentials were checked and confirmed to still work. That makes this list more dangerous than a random dump: every entry is presented as a working login.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linking each credential pair to its login page

Why This Matters

A Hotmail inbox is often the recovery point for other accounts, banking, shopping, and social media. If an attacker logs into a Hotmail account from this list, they may be able to reset passwords on everything else tied to that email, turning one exposed login into a much larger case of account takeover or identity theft.

How Combolists Work

A combolist gathers email and password pairs, often from stealer logs, prior breaches, or phishing campaigns, and organizes them by theme, in this case by email provider, so buyers can target a specific audience. That is what makes a list like 1.9K Hotmail Combo list Full Valid useful to criminals: it is pre-sorted and pre-verified.

Check If You Are Affected

If you use a Hotmail or Outlook address, it is worth checking now. HEROIC's free breach scanner checks your email against more than 400 billion exposed records, including targeted combolists like this one, and tells you immediately if your password needs to change.