5.8 Million Passwords From the Centurion.txt Leak Surfaced Online

5.8 Million Records Exposed in the Centurion.txt Stealer Log

HEROIC threat analysts identified a stealer log file named Centurion.txt circulating on a Telegram channel on June 21, 2026. The file contained 5,811,504 individual records, each pairing an email address with a plaintext password and the URL of the website where the credential was originally used. Stealer logs like this one are harvested directly from infected devices, meaning every line in the file represents a real account that was actively logged into at the time of infection.

Why This Is Dangerous

Because the passwords in Centurion.txt were captured in plaintext, an attacker doesn't need to crack or guess anything. They can simply copy an email and password pair and try it against email providers, banking portals, and social media logins. If the victim reused that password anywhere else, which most people unfortunatley do, the attacker can pivot into dozens of other accounts within minutes using automated tools.

What Was Exposed in the Centurion.txt Dump

• Email addresses tied to real, active accounts
• Plaintext passwords, stored with no encryption or hashing
• URLs showing exactly which site or service each login belongs to

Why This Matters for Everyday Users

A combo of email, password, and URL is the exact recipe attackers need for credential stuffing, where stolen logins are automatically tested across hundreds of popular websites. It's also enough to attempt account takeover on email and financial accounts, and it can feed directly into identity theft schemes and follow-on financial fraud. Even users who think they have nothing to hide are at risk, because a compromised email account is often the master key to resetting passwords on everything else.

How a Stealer Log Like Centurion.txt Gets Built

Stealer logs are generated by infostealer malware, malicious software that quietly installs itself on a victim's computer, usualy through a cracked software download, a fake update, or a malicious email attachment. Once running, the malware scans the browser's saved passwords, autofill data, and active session cookies, then packages everything into a text file and sends it back to the attacker. Files like Centurion.txt are often traded, sold, or dumped for free on Telegram channels and dark web forums, where anyone can download them and start testing the credentials right away.

Check If Your Credentials Were in the Centurion.txt Leak

If you think your email might be sitting inside this file, or any of the other 400 billion plus breached records HEROIC has indexed, don't wait to find out the hard way. Run a free scan with HEROIC's breach checker to see if your accounts show up in Centurion.txt or any other confirmed leak, and get step by step guidance on securing your accounts immediatley before someone else logs in first.