The OTTOMANCLOUD Stealer Log: 8,070 Stolen Credentials Hit Telegram

In June 2023, HEROIC analysts identified a stealer log uploaded to Telegram containing 8,070 records from the OTTOMANCLOUD bundle known as 473PCS JUNFREE OTTOMANCLOUD. The dataset included email addresses, plaintext passwords, and URLs, all harvested by infostealer malware before being packaged and distributed in private Telegram channels. Victims had no way to recieve any notification that their credentials were captured.

Why This Is Dangerous

This breach contains three things that together give an attacker a complete toolkit for account takeover: an email address to identify the victim, a plaintext password to authenticate, and URLs showing which services the victim was actively using. There is no guesswork involved. An attacker with this file can attempt logins immediately, without any additional research or password cracking. The combination of credentials and active service URLs is particularly effective for targeting high-value accounts including banking portals, email providers, and cloud storage services.

What Was Exposed

• Email addresses
• Plaintext passwords (immediately usable, no cracking required)
• URLs (identifying which services victims were logged into)

Why This Matters

Eight thousand exposed credentials may sound modest compared to mega-breaches, but each one represents a real person whose accounts are at risk. Credential stuffing attacks do not require massive datasets to be effective. Even a few thousand valid email and password pairs, tested against major platforms, can yield hundreds of successful logins. The real danger is password reuse. Most people use the same password across multiple services. If your OTTOMANCLOUD-related credential matches your Gmail or bank login, attackers will find out within minutes. The downstream consequences, including identity theft, financial fraud, and unauthorized purchases, can take months to resolve. This type of breach has occured with increasing frequency as stealer malware becomes easier to deploy.

How Stealer Log Breaches Work

Stealer logs originate from infostealer malware that infects computers through phishing emails, fake software installers, or compromised browser extensions. The malware runs quietly in the background, harvesting browser-saved passwords, autofill data, active session cookies, and credentials typed into login forms. The harvested data is structured into seperate log files and sent back to the attacker. Files are then bundled, sometimes into numbered collections like this 473-piece set, and distributed on Telegram to buyers and fellow threat actors. The "JUNFREE" naming suggests this particular bundle was shared freely rather than sold, meaning it reached a wider audience.

Check If You Are Affected

HEROIC's free breach scanner checks your email against a database of over 400 billion exposed records, including stealer log collections like this one. If your data appeared in the 473PCS JUNFREE OTTOMANCLOUD log or any other breach in our database, you will see it immediately. Visit HEROIC.com and scan your email for free. Knowing whether your credentials are exposed is the first step to protecting yourself and your accounts.