Your 27.8 LOGS_CENTEER Data May Be at Risk: Here’s What You Need to Know

A stealer log file containing 26,583 records was uploaded to a public Telegram channel in August 2022, identified as "27.8 LOGS_CENTEER." If you have an account with any service and recieved suspicious login notifications around that time, your credentials may have been part of this exposure. The data was freely accessable to anyone monitoring that channel, meaning attackers had immediate access to real user credentials the moment it was posted.

Why This Is Dangerous

Stealer logs are not just lists of emails. They are detailed snapshots taken directly from infected computers, capturing exactly what you typed, what sites you visited, and what passwords your browser had saved. This kind of data gives attackers everything they need to log into your accounts without guessing.

What makes this occurance especially serious is that the passwords were stored in plaintext. There was no hashing, no encryption, nothing standing between a criminal and your accounts. Anyone who downloaded this file could have started trying your credentials within minutes.

The log also included API host URLs alongside the credentials, which means the risk extended beyond personal accounts. If any of those endpoints belong to work systems or internal tools, the exposure could affect entire organizations, not just individual users.

What Was Exposed

• Email addresses tied to compromised accounts
• Plaintext passwords captured at the time of infection
• URLs of sites and services the victims were logged into
• API host endpoints accessed from infected machines
• Browser-stored credentials for multiple services
• Session and authentication tokens captured during active sessions
• Device endpoint identifiers from compromised machines

Why This Matters

Even if this breach is a few years old, the data does not expire. Criminals hold onto credential dumps and use them long after the original leak. If you were affected and have not changed your passwords since 2022, those credentials are still a live target. Password reuse makes the problem worse, since one stolen password can unlock a dozen different accounts across different services.

The combination of email, password, and URL in a single record means attackers do not need to do any extra work. They know exactly which site to target, what email to use, and what password to try. It is about as convenient for an attacker as it gets, and that is what seperates stealer logs from other types of breaches.

How Stealer Log Works

Stealer logs are created by a category of malware called infostealers. These programs get onto a victim's computer through phishing emails, fake software downloads, or malicious ads. Once installed, they run silently in the background and harvest everything stored locally, including saved browser passwords, cookies, and form autofill data.

The malware bundles all of this information into a structured log file and sends it back to the attacker's server. From there, the logs are often sold on dark web markets or shared freely on Telegram channels to build reputation or attract buyers for future batches. The 27.8 LOGS_CENTEER file fits this pattern exactly, appearing on Telegram as a free sample or promotional dump.

Because the infection happens on the endpoint itself, traditional network-level defenses often miss it entirely. The malware captures data before it is ever encrypted for transmission, which is why these logs contain credentials in plaintext rather than hashed form.

Check If You Were Affected

You can find out if your email address appeared in this breach or others by using HEROIC's free breach checker at heroic.com. Enter your email and you'll get a full report of any known exposures, so you can take action before someone else does.