The 12a 12 Stealer Log: 367,242 Stolen Credentials Hit the Dark Web

In July 2026, HEROIC analysts identified a stealer log named 12a 12 being shared on Telegram, containing 367,242 records pulled directly from infected devices, including email addresses, endpoints, API hosts, and plaintext passwords.

Why This Is Dangerous

Unlike a simple list of email and password pairs, a stealer log like this one is generated by malware that ran on a victim's own computer, capturing whatever was saved in their browser at the time of infection. With 367,242 records involved, this single log can expose logins for email, banking, work systems, and personal accounts all tied to the same infected devices.

What Was Exposed in the 12a 12 Stealer Log

• Email addresses
• Plaintext passwords
• Associated URLs and endpoints

Why This Matters

Because stealer logs capture real, active logins straight from a victim's browser, the credentials inside tend to be more current and more dangerous than older recycled breach data. Attackers use these logs for direct account takeover, and because a single infected device often has dozens of saved logins, one compromised computer can lead to fraud across email, banking, and shopping accounts simultaneously.

How a Stealer Log Like This Works

Stealer log malware infects a device, often through a fake download, cracked software, or phishing link, and then quietly copies every username, password, and saved URL stored in the victim's web browser. That stolen data is packaged into a log file and uploaded to Telegram channels like the one hosting 12a 12, where it is sold or shared with other criminals looking for ready-to-use credentials.

Check If You Are Affected

Because stealer logs often contain live, working credentials, checking your exposure matters more than usual. HEROIC's free breach scanner checks your email against more than 400 billion leaked records so you can find out quickly if your data has appeared in this or another stealer log.