Your CRYPTON_LOGS 301PCS Data May Be at Risk: Here’s What You Need to Know

A stealer log file containing 15,761 compromised records was uploaded to Telegram in November 2025 under the name CRYPTON_LOGS 301PCS. The data inside includes plaintext passwords, email addresses, and URLs pulled directly from infected devices, meaning the credentials were captured while they were actively in use. Logs like this one don't sit around, they get downloaded and put to work quickly by people who know exactly what to do with them.

Why This Is Dangerous

The "301PCS" in the file name likely refers to 301 individual log packages bundled together, which means this data came from a wide spread of compromised devices rather than a single source. That kind of breadth is exactly what makes it valuable to attackers running credential stuffing operations at scale.

Plaintext passwords require no additional work to exploit. Once someone has this file, every single password in it is immediately usable. There's no cracking, no guessing, no waiting. Combined with the matching email addresses, attackers have everything they need to start testing logins across popular platforms right away.

The upload to a public Telegram channel also means the data wasn't kept exclusive. It was freely distributed, which significantly increases the number of people who may have already attempted to use these credentials by now.

What Was Exposed

• Email addresses linked to account logins
• Plaintext passwords harvested from infected devices
• URLs and API endpoints from compromised browsing sessions
• Browser autofill and saved password data
• Session and authentication tokens
• Application-specific login credentials
• Endpoint and device access identifiers

Why This Matters

At 15,761 records, CRYPTON_LOGS 301PCS is a substantial dump. For individuals, the risk is straightforward: if your email and password are in there, any account you use that combination for is at risk. For organisations, the concern is that employee credentials captured on personal or work devices could open the door to internal systems, shared drives, or company email.

Stealer logs frequently contain adresses and login data from workplace tools, not just personal accounts. A single compromised credential from this kind of log can be the entry point for a much larger attack if it happens to belong to someone with access to sensitive systems.

How Stealer Log Works

Infostealer malware typically spreads through phishing emails that trick users into opening malicious attachments, fake software downloads disguised as useful tools, or compromised browser extensions. When installed, the malware runs silently in the background and begins collecting credentials, including anything typed into login forms, saved in the browser, or stored by password managers that aren't encrypted at rest.

Everything it gathers gets packaged into a log file and sent back to the attacker's infrastructure, often within minutes of the initial infection. These logs are then sorted, bundled, and either sold on underground marketplaces or distributed freely through channels like Telegram, as occured with this particular upload.

The CRYPTON_LOGS name appears across multiple log collections, suggesting this is part of an ongoing stealer campaign rather than a one-off incident. The 301 pieces in this batch are just one slice of what's likely a much larger operation.

Check If You Were Affected

If your email or passwords might be part of the CRYPTON_LOGS 301PCS breach or any other stealer log, HEROIC's free breach checker at heroic.com can scan thousands of known data leaks and flag your accounts instantly. Don't wait to find out the hard way through an unauthorised login.