The Mix TXTVALID Stealer Log Data Just Went Public on the Dark Web

HEROIC analysts identified this stealer log on 18-Apr-2026. The breach exposed 5,695 records, with stolen data including email addresses, plaintext passwords, and URLs. The source is identified as Mix TXTVALID.

Why This Is Dangerous

The TXTVALID label on this breach means the credentials were tested before distribution. That is a significant detail. An attacker who has already validated these login pairs knows they work, and can use them immediately without any trial and error. With 5,695 confirmed working credentials, this breach gives attackers a ready-to-use list for targeting email accounts, banking portals, and any other service using the same passwords. Validated credentials are especially dangerous because they represent accounts still open and accessible.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (the exact websites where credentials were used)

Why This Matters

For each person whose credentials appear in the Mix TXTVALID breach, the immediate concern is credential reuse. If the exposed password is used on any other account, that account is now exposed as well. At 5,695 records, this breach is large enough to affect a significant number of people across multiple services. Anyone who has reused passwords recently should treat this breach as a reason to audit and update every account where that password was used.

How Stealer Logs Work

Stealer logs are created by malware that infects devices and silently records login credentials. After raw logs are collected, some criminal actors run validation checks against the stolen credentials to confirm which email and password combinations still produce successful logins. These validated sets are packaged separately and distributed through Telegram channels as premium material. HEROIC analysts actively monitor these channels to capture and index new breach data as it circulates, so affected users can be alerted as quickly as possible.

Check If You Are Affected

HEROIC offers a free breach scanner that searches 400 billion records from known breaches. Search your email address now to find out if your credentials appear in this breach or others. The scan is free and takes seconds.