Stealer Log Breach: Telegram User Exposed 12,585 Plaintext Passwords

HEROIC analysts identified a stealer log file that was uploaded to Telegram in August 2023, exposing 12,585 records. The data, shared by an anonymous Telegram user, contained email addresses, plaintext passwords, and URLs harvested from infected devices. Stealer logs like this one are a direct byproduct of malware infections and represent one of the most actionable categories of credential data circulating on the dark web today.

Why This Is Dangerous

Unlike breaches where passwords are hashed or encrypted, the credentials in this dataset were captured in plaintext, meaning attackers can use them immediately without any cracking or decoding. Every email and password pair in this file is ready to be tested against popular services like Gmail, Facebook, banking apps, and shopping platforms. With 12,585 records in circulation on Telegram, a channel with millions of subscribers, this data spreads rapidly and is likely already being used in automated login attacks.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs (web addresses of sites where credentials were captured)

Why This Matters

When your email and password are exposed together in plaintext, attackers do not need sophisticated tools. They can simply load the credentials into automated software and attempt to log into dozens of services within minutes. This attack method, known as credential stuffing, is responsible for millions of account takeovers every year. The included URLs also tell attackers exactly which websites the credentials were originally used on, making targeted attacks even easier. If a victim reuses the same password on other accounts, every one of those accounts is at risk.

How Stealer Logs Work

Stealer logs are created by a category of malware known as information stealers. These programs are typically delivered through phishing emails, malicious downloads, or compromised software. Once installed on a victim's device, the malware silently scans the system for saved passwords, browser credentials, cookies, and other sensitive data. It then packages everything it finds into a log file and sends it back to the attacker. The attacker may sell the log, share it in criminal communities, or upload it to platforms like Telegram where it can be accessed by thousands of other bad actors. The victim usually has no idea any of this has happened.

Check If You Are Affected

HEROIC's free breach scanner searches across a database of more than 400 billion compromised records, including stealer logs like this one. If your email address or credentials appear in this dataset or any other known breach, you will know immediately so you can take action. Run a free search now to find out if your information is at risk.