Hotmail Users Named in the 1550 Private Hotmail Credential Dump

On 06-May-2026, HEROIC analysts found a combolist titled 1550 Private Hotmail circulating on Telegram. The file contains 1,567 email and plaintext password pairs, almost all tied to Hotmail and Outlook style addresses, along with the URLs where each login works.

Why This Is Dangerous

A combolist built specifically around Hotmail accounts gives an attacker a ready-made list of email logins to test. Because email inboxes are often used to reset passwords for other services, a compromised Hotmail account can quickly become the key to a much wider set of accounts belonging to the same person.

What Was Exposed

• Email addresses (Hotmail and Outlook style)
• Plaintext passwords
• URLs for each affected login

Why This Matters

If your Hotmail or Outlook address is among the 1,567 records in this list, an attacker doesn't need to guess anything, they simply try the listed password. This kind of credential stuffing works especially well against email accounts, since so many people never change a password once it starts working, and a hacked inbox opens the door to password resets on banking, shopping, and social media accounts tied to that email.

How Combolists Work

A combolist is a curated file of email and password pairs pulled together from older breaches, stealer logs, and leaked databases, then cleaned up and organized by email provider, in this case Hotmail. Criminals run these lists through automated "checker" tools that quietly test each pair against real login pages; the ones that still work get filtered into a fresh list like this one and resold or shared on Telegram.

Check If You Are Affected

If you use a Hotmail or Outlook address, it's worth checking now. HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records, including this combolist, so you can see if your credentials are exposed and update your password right away.