The Outlook 11.11 Dump Has More Exposed Logins Than You Realize

HEROIC analysts tracked the Outlook 11.11 stealer log file shared on Telegram in January 2023. The dataset exposed 3,491 records including email addresses, plaintext passwords, and URLs from compromised Microsoft Outlook accounts and associated services.

Outlook Credentials Expose Far More Than Just Email

Microsoft Outlook accounts are the gateway to Office 365, OneDrive, Teams, and Azure. Attackers who obtain Outlook credentials gain access to business communications, stored documents, and can pivot into corporate networks through linked enterprise accounts.

What the Outlook 11.11 Leak Exposed

• Email Addresses
• Plaintext Passwords
• URLs (endpoint context)

How Stolen Outlook Logins Enable Corporate Intrusion

Outlook breaches are particularly dangerous because many users share the same credentials across personal and work accounts. A single stolen login can give attackers access to internal company communications, customer data, and financial records through Microsoft 365 integration.

How Stealer Log Breaches Work

Stealer logs are produced by malware silently installed on victims' computers. The malware captures usernames, passwords, and browser session data before sending it to criminals, who then package and sell the data on Telegram channels and dark web markets.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches over 400 billion+ leaked records to tell you if your email was part of this or any other stealer log dump. Check your exposure now at no cost.