The 395 PCS Stealer Log: 8,139 Passwords Exposed. Yours Might Be One.

HEROIC's threat intelligence team discovered a stealer log file uploaded to a public Telegram channel on November 10, 2023. The file, attributed to an anonymous Telegram user, contained 8,139 records tied to compromised endpoints. Each record included an email address, a plaintext password, and a URL, pointing to credentials harvested directly from infected devices. This type of exposure is particularly dangerous because the passwords were stored in plain text, meaning anyone who obtained the file could use them immediatley without any additional effort.

Why This Is Dangerous

Stealer logs are one of the most efficient tools in a cybercriminal's arsenal. Once a device is infected with infostealer malware, every password saved in a browser or app can be captured and packaged into a log file. That file is then shared or sold, often on Telegram or dark web forums, where other criminals use it to break into accounts. Because the passwords in this breach were plaintext, there was no encryption to crack. Anyone with the file had immediate, usable access to thousands of credentials. The risk of account takeover and credential stuffing attacks is extremely high for anyone included in this leak.

What Was Exposed

The following types of personal and account data were included in this stealer log:

• Email Addresses
• Plaintext Passwords
• URLs (indicating the sites or services the credentials belong to)

Why This Matters

Even though 8,139 records is a relatively small number compared to some mega-breaches, the impact on affected individuals is just as serious. Plaintext passwords paired with email addresses and the specific URLs where they were used gives attackers a precise roadmap to your accounts. If you use the same password across multiple services, a breach like this can create a domino effect. One exposed credential can lead to unauthorized access across email, banking, social media, and more. The data from this leak may have already been traded or sold multiple times since November 2023, meaning your credentials could have circulated in criminal networks for over a year before you learned about it.

How Stealer Logs Work

A stealer log is created when malware infects a device and silently copies sensitive information before the user realizes anything is wrong. The malware, often called an infostealer, targets saved passwords in browsers like Chrome and Firefox, autofill data, session cookies, and active logins. The stolen data is then packaged into a structured log file and uploaded to a channel where other bad actors can download and use it. In this case, the log was uploaded to Telegram, which has become a popular distribution platform for stolen credential files due to its ease of use and large user base. Victims of stealer log breaches often have no idea their device was ever compremised, making it critical to check whether your data appeared in known leaks.

Check If You Are Affected

HEROIC offers a free scanner that checks your email address against more than 400 billion leaked records, including stealer log files like this one. If your credentials were part of this breach or any other known leak, our tool will flag it immediatley so you can take action. Changing passwords, enabling two-factor authentication, and using a password manager are the most effective steps you can take after a credential exposure. Do not wait to find out the hard way that your account has been accessed. Run a free scan now and see exactly what data about you is circulating in known breaches.