Search Your Email: The CloudHesoyam Dump Exposed 12,234 Accounts

HEROIC analysts discovered a stealer log file uploaded to a public Telegram channel in November 2025 by a user calling themselves "CloudHesoyam." The file contained 12,234 records pulled directly from infected computers, including email addresses, plaintext passwords, and the URLs where those credentials were used. This kind of leak shows up fast and spreads wide once it hits Telegram, often reaching hundreds of channels within hours of the first upload.

Why This Is Dangerous

Stealer logs are not just a list of old passwords. They capture live, working credentials at the exact moment a device gets infected. That means an attacker who gets ahold of this file can log into email accounts, banking portals, and workplace systems right away. Because plaintext passwords are included, there is no cracking required. Anyone with the file can simply copy and paste their way into your accounts. The URLs included in the log make it even easier, pointing attackers directly to the sites where each set of credentials was used.

What Was Exposed

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

• Email addresses
• Plaintext passwords (unencrypted, ready to use)
• URLs associated with each set of credentials

Why This Matters

When plaintext passwords leak alongside email addresses, the risk of account takeover is immedaite. Attackers use these combinations to try logging into dozens of other services, banking on the fact that most people reuse passwords across multiple sites. This practice, known as credential stuffing, can result in drained bank accounts, locked social media profiles, and stolen identities. The URLs in the log also reveal exactly which services each person used, making it easy to prioritize high-value targets like finantial platforms or work email accounts.

How Stealer Log Malware Works

Stealer malware is a type of program that quietly installs itself on a device, often through a fake software download, a phishing email, or a malicious link. Once installed, it runs in the background and collects usernames, passwords, and browser session data without the user noticing anything unusual. The stolen data gets bundled into a log file and sent back to the attacker. These logs are then sold or shared on underground forums and Telegram channels. The entire process from infection to credential theft can happen in minutes, and the user may never recieve any warning that their device was compromised.

Check If You Are Affected

If your email address was part of this Telegram upload, your credentials may already be circulating among cybercriminals. HEROIC has indexed this breach in its free scanner, which checks your email against over 400 billion leaked records. Run a free search now to find out if your data was exposed and take steps to secure your accounts before someone else does.