Inside the Hotmail Stealer Logs: 2,884 Passwords Harvested

HEROIC analysts identified a stealer log titled "2.9K Hotmail 21.06" that appeared on a Telegram channel on June 21, 2026. The dump contains 2,884 records focused on Hotmail email accounts. Each entry pairs a victim's email address with their plaintext password and the URLs they were browsing when the infostealer malware captured their session data.

This is one of several Hotmail-targeted stealer logs that have surfaced in recent weeks, indicating a sustained campaign of credential harvesting against Microsoft email users. The structured format of the data suggests it was collected by a well-known infostealer variant and packaged for redistribution.

Why Plaintext Credentials Leave No Room for Delay

Every password in this dump appears in plaintext. There is no hashing, no encryption, and no barrier between the attacker and a working login. Once this file was uploaded to Telegram, anyone with access could begin testing these credentials against Hotmail and other Microsoft services immediately.

Plaintext passwords are the most dangerous form of credential exposure because they eliminate the time attackers typically need to crack password hashes. The 2,884 accounts in this log are effectively pre-authenticated, meaning the only thing standing between an attacker and access is whether the victim has changed their password since the malware ran.

What Was Exposed in the 2.9K Hotmail Dump

• Email Addresses — Hotmail accounts that often double as Microsoft account identifiers, providing potential access to Outlook, OneDrive, Teams, and other connected services.
• Plaintext Passwords — Fully readable login credentials extracted from victims' browsers and password stores, requiring no technical skill to exploit.
• URLs — The websites and web applications victims were actively using when their credentials were stolen, providing attackers with a roadmap of which services to target first.

Why Nearly 3,000 Stolen Logins Multiply Across Services

Studies consistently find that most people use the same password for multiple online accounts. When attackers obtain 2,884 Hotmail credentials, they do not limit themselves to Microsoft services. Each email-password combination gets fed into automated tools that attempt logins on banking sites, shopping platforms, social media networks, and cloud services simultaneously.

The compounding effect is significant. A single compromised Hotmail account can lead to password reset emails for dozens of linked services, giving the attacker a master key to the victim's entire digital life. This is why even a moderately sized stealer log can result in thousands of secondary account takeovers.

How Stealer Logs Extract Credentials from Your Browser

Infostealer malware operates silently after infection, typically delivered through malicious email attachments, fake software cracks, or drive-by downloads on compromised websites. The malware targets browser credential stores where saved passwords are kept, extracting every username and password pair the victim has stored.

Beyond saved passwords, many infostealers also capture active session cookies, autofill data, and cryptocurrency wallet information. The collected data is formatted into a standardized log and uploaded to the attacker's infrastructure, from where it eventually makes its way to Telegram channels and underground marketplaces for mass distribution.

Check If Your Credentials Appear in This Leak

If you have a Hotmail email address, your login details may be among the 2,884 records in this dump. HEROIC offers a free breach scanner that checks your email address and passwords against a database of over 400 billion compromised records sourced from stealer logs, data breaches, and dark web leaks.

Search your email now to determine whether your Hotmail credentials have been exposed in this or any other breach. If you find a match, update your password immediately and activate two-factor authentication to prevent unauthorized access to your account and all services connected to it.