Logs 16 Sep: How a Telegram Leak Exposed 85,007 Passwords

In September 2025, HEROIC analysts identified a stealer log file uploaded by an anonymous Telegram user containing 85,007 compromised records. The exposed data includes email addresses, plaintext passwords, and URLs harvested from infected devices, making this a high-risk credential leak affecting victims primarily in the United States.

Why This Is Dangerous

Stealer logs are prized by cybercriminals because they contain ready-to-use credentials ripped directly from victims' browsers and applications. With plaintext passwords in hand, attackers can immediately attempt to log into email accounts, banking portals, social media, and corporate systems. The inclusion of URLs reveals exactly which websites the victim was logged into, allowing attackers to target the most valuable accounts first.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (websites and services the victim accessed)

Why This Matters

Even a single stealer log entry can cascade into multiple account takeovers. Attackers use automated tools to test stolen credentials across hundreds of services in a technique called credential stuffing. Once inside an account, they can pivot to identity theft, intercept two-factor authentication codes, drain financial accounts, or sell the verified credentials on dark web marketplaces for further exploitation.

How Stealer Logs Work

Stealer malware is typically delivered through phishing emails, malicious software downloads, or compromised websites. Once installed on a victim's device, it silently harvests saved browser passwords, cookies, autofill data, and session tokens. The collected data is packaged into log files and uploaded to Telegram channels or dark web forums where other criminals can purchase or freely download them. The September 2025 upload represents one such distribution event, putting 85,007 records into circulation among threat actors.

Check If You Are Affected

If you use any of the email addresses or services captured in this stealer log, your credentials may already be in the hands of cybercriminals. HEROIC's free breach scanner searches across more than 400 billion exposed records to tell you instantly whether your information has been compromised. Check your email now and take action before attackers do.