The MegaCloud 12.12 Hotmail Data Quietly Appeared on the Dark Web

HEROIC Analysts Discover the MegaCloud 12.12 Hotmail Log

On December 12, 2024, HEROIC's threat intelligence team came across a stealer log titled "3.6K Hotmail HITS By MegaCloud 12.12" uploaded to Telegram by an anonymous user. The file contained 3,668 records, each pairing a Hotmail-linked email address with a plaintext password and the URL of the login page the credentials were used on.

The MegaCloud 12.12 Data Quietly Appeared on the Dark Web

There was no headline, no company statement, no breach notification letter. A file with 3,668 working Hotmail logins simply showed up in a Telegram channel and started circulating among buyers, which is how most stealer logs surface. Nobody affected was ever told their password had been stolen, which is exactly what makes this kind of quiet leak so dangerous, the people at risk have no idea to change anything.

What Was Exposed in the MegaCloud 12.12 Log

• Hotmail and related email addresses used as account logins
• Plaintext passwords tied to those accounts
• The website URLs each credential pair was used on

Why This Matters for the 3,668 People Affected

A compromised Hotmail account is often the gateway to a person's entire digital identity, since it's commonly used to reset passwords on banking, shopping, and social accounts. If any of the 3,668 people in this log reused their password elsewhere, attackers can chain a single stolen email login into a wider account takeover across multiple services.

How Stealer Logs Like MegaCloud 12.12 Are Built

This data is the product of infostealer malware, which infects a device through phishing emails or cracked software, then silently harvests saved browser passwords and autofill details. The stolen credentials are exported into a file, and releases like this one, labeled with a date and a group name, are typically compiled from multiple infections before being shared on Telegram.

Check If You Are Affected

Because leaks like this rarely make headlines, checking for yourself is the only reliable way to know. HEROIC's free breach scanner checks your email against a database of more than 400 billion compromised records, so you can find out quickly and reset any passwords that are still active.