The 620 PCS Dump: 8,450 Stolen Credentials Hit Telegram on Christmas Eve

On Christmas Eve 2023, an anonymous Telegram user quietly dropped a stealer log file into a public channel. The file, labeled "620 PCS," didn't get much attention at first, but buried inside were 8,450 records containing real peoples email addresses, plaintext passwords, and the URLs where those credentials were used. No encryption, no hashing. Just raw login data sitting in a text file for anyone to grab.

Why This Is Dangerous

Stealer logs like this one are a goldmine for bad actors. When passwords are stored in plaintext, there is no cracking required. Someone can take that list and start testing credentials on Gmail, banking apps, or corporate VPNs within minutes. The fact that this was posted to a public Telegram channel means hundreds or thousands of people may have already downloaded it before any takedown could happen. Credential stuffing attacks powered by logs like this are responsable for a huge share of account takeovers each year.

What Was Exposed

• Email addresses (8,450 records)
• Plaintext passwords, fully readable with no decryption needed
• URLs revealing which websites and services were targeted
• API host information pointing to backend system access points
• Endpoint data from compromised devices

Why This Matters

The combination of email addresses, plaintext passwords, and the specific URLs where those credentials work is exceptionaly dangerous. It's not just about one account. Most people reuse passwords across multiple sites, which means a single exposed record could unlock email, social media, shopping accounts, and more. The API host data in this log takes things further, potentially giving attackers a map to internal services and backend systems. This isn't just a personal problem. It's a buisness risk too.

How Stealer Logs Work

Stealer logs are generated by a category of malware called infostealers. These programs typically reach victims through phishing emails, fake software downloads, or malicious browser extensions. Once installed on a device, the malware silently scans saved passwords from browsers, email clients, and other apps. It also monitors active sessions and captures keystrokes. The harvested data is then bundled into a structured log file and sent back to whoever deployed the malware. That operator might sell the logs on dark web forums, trade them in private groups, or dump them publicly on Telegram, as happened here in December 2023.

Check If You Are Affected

If you think your credentials may have been caught up in this breach or any other stealer log, you can check right now. Heroic.com has indexed over 400 billion leaked records from breaches around the world. Enter your email address to see if your data has been exposed, where it came from, and what steps you should take next. It takes about 30 seconds and could save you from a serious account compromise.

Search 400B+ leaked records at Heroic.com