The 28.06 Stealer Log Data Quietly Appeared on Telegram Last August

HEROIC analysts identified a stealer log file uploaded to Telegram in August 2023, labeled 28.06 by the person who shared it. The label appears to reference a collection date of June 28, suggesting this file contains credentials harvested from infected devices on or around that date. The dataset includes 4,812 records containing email addresses, plaintext passwords, and URLs. While smaller in volume than some stealer log datasets, every record represents a real device that was compromised and a real person whose credentials are now in circulation.

Why This Is Dangerous

The data in the 28.06 file is immediately usable by anyone who obtains it. Email addresses and plaintext passwords together give attackers direct access to accounts without any additional work. The URLs show exactly which websites the victims were logged into at the time of infection, allowing attackers to prioritize their attempts. Credentials from stealer logs tend to be fresher and less saturated than data from large corporate breaches, meaning they are less likely to have already been changed by the time they reach criminal buyers.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (websites visited and logged into at the time of device compromise)

Why This Matters

Even a dataset of 4,812 records carries serious risk. Each record is a door into someone's digital life. Attackers who successfully log into an email account gain the ability to reset passwords for every other service tied to that address, potentially taking over bank accounts, cloud storage, payment platforms, and more within a single session. Credential theft often goes undetected for weeks or months, giving attackers time to cause significant financial and reputational damage before victims realize anything is wrong.

How Stealer Logs Work

Information-stealing malware reaches devices through common, everyday actions: clicking a link in a phishing email, downloading software from an unofficial site, or installing a browser extension that is not what it claims to be. Once the malware is running on a device, it quietly collects every password stored in the browser, every active session cookie, and every set of credentials the user enters manually. The data is sent back to the attacker as a structured log file. Attackers date and label these files for their own tracking purposes, which is why this file carries the label 28.06. The files are then shared through private Telegram channels, sold on dark web marketplaces, or used directly in automated attack campaigns.

Check If You Are Affected

HEROIC's breach scanner covers more than 400 billion compromised records, including dated stealer log batches like this one from Telegram. Search your email address for free to find out if your credentials appear in the 28.06 file or any other known breach. Early detection gives you the best chance to change passwords and secure your accounts before attackers can act.