The PremCloud 90 Telegram Stealer Log Exposed 3,793 U.S. Accounts

HEROIC analysts identified a stealer log file uploaded to a public Telegram channel on November 4, 2023, by a user going by "PremCloud 90." The log exposed 3,793 records belonging to users in the United States, including plaintext passwords, email addresses, and URLs harvested directly from infected devices. Unlike traditional data breaches where a company's servers are attacked, this data was stolen silently from individual computers using infostealer malware -- making the victims largely unaware their credentials had been comprimised.

Why This Is Dangerous

Stealer logs are among the most actionable data types on the dark web. Because the passwords in this log are stored in plaintext -- meaning they were never encrypted -- any attacker who downloads this file can use those credentials immediately. With real email and password pairs in hand, criminals can attempt to log into banking apps, email accounts, social media, and workplace systems. If a victim reuses the same password across multiple sites (which most people do), a single stolen credential can unlock dozens of accounts at once.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (websites visited or accessed from infected devices)

Why This Matters

When plaintext passwords and email addresses appear together in a leaked dataset, the risk of credential stuffing attacks rises dramaticly. Cybercriminals use automated tools to test stolen username and password pairs against hundreds of websites simultaneously. Victims may find their bank accounts drained, their email accounts hijacked to send phishing messages to contacts, or their identities used to open fraudulent lines of credit. The URLs included in this log also reveal which websites the victims were using, giving attackers a roadmap of where to target their login attempts first.

How Stealer Log Breaches Work

Infostealer malware is typically installed on a victim's computer without their knowledge, often through a malicious email attachment, a fake software download, or a compromised website. Once running, the malware quietly scans the device for saved passwords, browser cookies, and login sessions. It then bundles this data into a log file and transmits it back to the attacker. The attacker may use the data themselves or sell and distribute it through dark web forums and Telegram channels -- which is exactly how this PremCloud 90 dataset ended up being shared publicly. The entire process can happen in minutes, and victims often have no idea their passwords were stolen until damage has already been done.

Check If You Are Affected

HEROIC's free identity scanner checks your email address against more than 400 billion exposed records, including stealer logs like this one. If your credentials appeared in the PremCloud 90 Telegram upload or any other known breach, you'll recieve an immediate alert so you can change your passwords and secure your accounts before attackers act. Run your free scan now at heroic.com -- it takes less than a minute and could prevent a serious account takeover.