77K Mix 13.05 Leak: 75,409 Login Records Quietly Exposed

The Quiet Scale of the "77K Mix 13.05" Leak

In May 2026, HEROIC analysts identified a stealer log named "77K Mix 13.05" uploaded to a Telegram channel. Despite its low-key name, the file contained 75,409 records, each pairing an email address with a plaintext password and the URL of the account it opens, one of the larger stealer logs HEROIC has tracked in this batch.

Why This Is Dangerous

A file this size rarely draws headlines the way a major corporate breach does, but the risk to the people inside it is identical. Each of the 75,409 records is a working login, already matched to the exact site it unlocks, ready for an attacker to use without any additional effort.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs identifying each login page

Why This Matters

At this scale, automated credential stuffing becomes far more efficient for attackers, they can test tens of thousands of email and password combinations against popular sites in a short amount of time. Anyone whose credentials appear in this log and who reused that password elsewhere faces a real risk of account takeover.

How Stealer Logs Work

Stealer malware infects devices through cracked software, fake downloads, or malicious attachments, then quietly collects saved browser passwords and autofill data. Large logs like "77K Mix 13.05" are built by combining data from many infected devices before being shared through Telegram channels.

Check If You Are Affected

HEROIC's free breach scanner checks your email against more than 400 billion breached records, including large stealer logs like this one. Run a free scan to see if your credentials appear in this leak or any other known exposure.