The XIII_LOGS Dump: 4,950 Stolen Credentials Uploaded by a Telegram User

In May 2023, a Telegram user quietly uploaded a stealer log file to underground channels, exposing 4,950 records containing email adresses, plaintext passwords, and URLs. The breach, known as XIII_LOGS, originated from endpoint compromise and represants a growing category of credential theft that bypasses traditional database hacks entirely. Victims often have no idea their login data is circulating on dark web forums until it is used against them.

Why This Is Dangerous

Stealer logs are among the most actionable types of breached data because they capture credentials directly from infected devices in real time. Unlike database dumps, stealer logs often include active session tokens, browser-saved passwords, and API keys harvested at the moment of infection. The XIII_LOGS file exposed plaintext passwords, meaning any attacker who obtained this data could attempt to log in immediately without needing to crack any hashes.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (including internal endpoints and API hosts)

Why This Matters

The exposure of plaintext passwords alongside matching email addresses and endpoint URLs creates a complete attack package. Cybercriminals can use this data for credential stuffing, account takeover, and targeted phishing campains. Because API hosts and internal URLs were also included, organizations rather than just individuals may be at risk. A single compromised employee device can expose corporate systems through stealer logs like XIII_LOGS.

How Stealer Log Breaches Work

Stealer logs are generated by malware infections, typically spread through phishing emails, malicious downloads, or compromised software installers. Once installed on a victim's device, the malware silently harvests saved browser credentials, cookies, and application login data, then transmits everything to an attacker-controlled server. The collected data is packaged into log files and sold or shared on Telegram channels, dark web forums, and private criminal marketplaces. The XIII_LOGS breach followed this exact pattern, with a Telegram user distributing the stolen data in May 2023.

Check If You Are Affected

HEROIC's free scanner searches over 400 billion exposed records, including stealer log databases like XIII_LOGS. Enter your email address to instantly find out if your credentials apeared in this breach or any other known data exposure. Early detection is the fastest way to secure your accounts before attackers can exploit stolen login data.