The CartelJohnDoe Dump: 16,743 Stolen Credentials Hit the Web

"CartelJohnDoe" Stealer Log Exposes 16,743 Records

HEROIC analysts identified a stealer log file labeled "CartelJohnDoe" that surfaced on a Telegram channel on July 25, 2026. The file contained 16,743 records, including email addresses, plaintext passwords, and the URLs of the accounts those credentials unlock. The file was posted openly in the channel, making it immediately available to anyone who came across it.

Why This Is Dangerous

This data was harvested directly from infected devices rather than pulled from a hacked company server, which is why the passwords in this file are stored in plaintext instead of hashed. Paired with the matching URL for each account, an attacker can go straight to the correct login page and try each of these 16,743 credential pairs without any extra work.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the accounts the credentials belong to

Why This Matters

With 16,743 records exposed, the odds are high that some of these people reused their password on other accounts. Attackers rely on that habit for credential stuffing, taking a leaked email and password pair and testing it against banking, email, and social media logins. That process can quickly lead to account takeover, identity theft, and financial fraud.

How Stealer Logs Work

A stealer log is created when malware, often hidden inside a cracked program, fake download, or malicious attachment, infects a device and quietly collects everything saved in the browser: usernames, passwords, autofill data, and browsing history. That data is packaged into a log file, labeled with a name like "CartelJohnDoe," and uploaded to Telegram channels where anyone can access it.

Check If You Are Affected

If you think your email might be part of this or any similar leak, HEROIC's free breach scanner checks your address against a database of more than 400 billion leaked records. It takes seconds to check and gives you a clear next step.