What Attackers Can Do With the LOG Telegram Stealer Leak

HEROIC analysts uncovered a stealer log uploaded to Telegram by an anonymous threat actor in February 2026. The file, identified under the name LOG, contained 3,912 records harvested from compromised endpoints. The exposed data included email addresses, plaintext passwords, and the URLs associated with each credential, giving attackers an immediately usable map of victims' online accounts.

Why This Is Dangerous

With plaintext passwords and matching URLs in hand, attackers can directly access the exact accounts from which credentials were stolen. There is no need for password cracking or guesswork. Criminals can monetize this data by logging into financial accounts, selling access to other threat actors, or using compromised email accounts as launchpads for phishing campaigns targeting the victim's contacts.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (the specific services where credentials were captured)

Why This Matters

Stealer log data circulates rapidly through criminal communities. Once uploaded to Telegram, a dataset like this one can be downloaded, repackaged, and sold dozens of times within hours. Each subsequent buyer can attempt credential stuffing against banking, e-commerce, and email platforms. Password reuse among victims dramatically amplifies the damage, turning a single compromised credential into access across multiple services.

How Stealer Logs Work

A stealer log is the output file produced by information-stealing malware installed on a victim's device. The malware, often distributed through phishing links, pirated software, or malicious browser extensions, silently extracts saved credentials from browsers and applications. The resulting log file is a structured list of URLs, usernames, and passwords. These logs are then packaged and distributed by threat actors through Telegram channels, dark web forums, and criminal marketplaces.

Check If You Are Affected

If you suspect your device may have been compromised at any point, your credentials could appear in datasets like this one. HEROIC's free breach scanner searches more than 400 billion exposed records to tell you whether your email and passwords have been leaked. Run a free scan today and change any passwords that may have been captured by stealer malware.