MX Telegram Stealer Log Exposed 5 Emails and Plaintext Passwords

On June 18, 2026, HEROIC analysts discovered a stealer log shared by a Telegram user that contained 5 records associated with MX domain endpoints. The exposed data includes email addresses, plaintext passwords, and the URLs of websites visited by the victims. Although the record count is small, each entry contains fully usable login credentials that require no decryption to exploit.

Why Even 5 Plaintext Credentials Are Dangerous

A small number of exposed records does not mean a small amount of risk. Each of these 5 records contains a working email and password combination stored in plaintext, ready for immediate use. Attackers regularly use small credential sets to test logins on major platforms like Gmail, Microsoft 365, PayPal, and banking portals. Because people commonly reuse passwords, a single entry from this dump could open the door to multiple accounts belonging to the same person.

What Was Exposed in the MX Stealer Log

• Email Addresses linked to MX domain services and other online platforms
• Plaintext Passwords extracted directly from infected devices without any encryption
• URLs revealing the login pages and websites each victim accessed

Why This Leak Enables Further Attacks

Credential stuffing tools can take even a handful of email and password pairs and test them against thousands of websites in seconds. If any of these 5 victims used the same password for their bank, their work email, or their social media profiles, attackers gain access to those accounts as well. The included URLs act as a guide, showing exactly which services to target first. This chain reaction turns a minor leak into a serious personal security threat.

How Stealer Log Malware Captures Your Data

Stealer log malware typically arrives through phishing emails, compromised software installers, or infected advertisements. Once installed, it runs silently in the background, recording keystrokes and extracting saved credentials from web browsers like Chrome, Firefox, and Edge. The malware collects login details, browsing history, and session cookies, then packages everything into a structured log file. These files are distributed through Telegram channels and dark web forums, where other criminals purchase or download them for use in fraud campaigns.

Find Out If Your MX Credentials Were Compromised

If you use an MX domain email address or have reused your password across services, your accounts could be affected by this leak. HEROIC tracks over 400 billion compromised records across thousands of breaches and stealer logs. Run a free scan with HEROIC's breach checker to see if your email address or credentials appear in this dataset or any other known exposure.