Your 300 PCS 21 DECEMBER FREE LOGS Data May Be at Risk: Here’s What You Need to Know

In December 2024, a Telegram user posted a stealer log file labeled "300 PCS - 21 DECEMBER - FREE LOGS" that exposed 4,181 records pulled directly from infected computers. The fact that it was shared as a free download on a public channel means there is no way to know how many people downloaded and used the data. If your credentials were among those 4,181 records, someone may have already tried to use them.

Why This Is Dangerous

Free log dumps on Telegram are often posted as a way to advertise a larger paid operation. The people sharing them want to show that they have real, working credentials, which means the data was almost certainly tested before being released. By the time a log like this goes public, it has typically already been used once.

The passwords in this file were in plaintext, with no encryption protecting them. That means anyone who opened the file could immediately see your password alongside your email and the exact website it belongs to. No cracking, no guessing required. It is a direct key to whatever account that password protects.

December 2024 is recent enough that many people are still using the same passwords they had at that time. If you beleive you may have been affected and have not changed your credentials since then, this should be treated as an urgent matter.

What Was Exposed

• Email addresses from compromised devices
• Plaintext passwords captured by infostealer malware
• Website URLs associated with each credential pair
• API host addresses accessed from infected endpoints
• Browser-saved login data from multiple accounts
• Session data and authentication tokens
• Device and endpoint identifiers from infected machines
• Autofill and stored form data from browsers

Why This Matters

Even a relatively small breach of 4,181 records can have a large real-world impact. Each record represents a real person whose credentials are now in the hands of strangers. When those credentials get folded into larger combo lists and sold or traded across forums, the reach of this single file multiplies far beyond the original 4,181 individuals.

The timing matters too. A breach from December 2024 is recent, and people tend to cycle through the same passwords for years. The window of opportunity for attackers using this data is still open, and without knowing your email adress was in this file, you would have no reason to change anything.

How Stealer Log Works

Infostealers are a type of malware designed specifically to harvest saved credentials from a victim's device. They are commonly spread through phishing links, fake software cracks, game cheats, and malicious browser extensions. Once they run on your machine, they silently copy everything your browser has saved and package it into a log file.

That log file gets sent to the attacker automatically, often within seconds of execution. The attacker then has a clean, organized file with email addresses, passwords, and URLs in columns. Files like the 300 PCS December log are typically released publicly on Telegram as a promotional move, showing potential buyers the quality of the data before charging for larger batches.

This model means the data gets circulated widely and quickly. Within days of a public Telegram post, the credentials can appear in multiple combo lists used for credential stuffing attacks across hundreds of different websites.

Check If You Were Affected

Use HEROIC's free breach checker at heroic.com to see if your email appeared in this breach or any other known data exposure. It takes seconds and could alert you to a risk you did not know existed.