Search Your Email: The XIII_LOGS Dump Exposed 8,723 Stolen Accounts

XIII_LOGS Stealer Log Exposes 8,723 Credentials Including Plaintext Passwords

In April 2023, HEROIC analysts detected a stealer log file being shared on a Telegram channel under the name XIII_LOGS. The file contained 8,723 records extracted from compromised computers, with the majority of victims located in the United States. Each record included a complete set of login credentials: an email address, a plaintext password, and the URL of the website where the login was saved. This breach was verified by our team and represents a clear danger to anyone whose information is contained in the dataset.

What makes the XIII_LOGS dump particularly concering is the nature of the data itself. These are not old credentials scraped from a decade-old database. They were pulled directly from active browser sessions by malware, meaning the passwords were almost certainly in use at the time they were stolen.

Why the XIII_LOGS Data Puts Thousands of Accounts in Jeopardy

Each record in the XIII_LOGS file functions as a ready-to-use login. Attackers do not need to crack hashes or guess passwords. They receive the email, the password in plain text, and the exact website where it works. This eliminates every barrier between downloading the file and breaking into someone's account.

The risk compounds for anyone who reuses passwords. If the same password protects your email, your bank account, and your shopping profiles, then a single entry in this stealer log could compromise all of them simultanously. Attackers know this pattern well and routinely test stolen credentials against dozens of services the moment they acquire a new dataset.

What Credentials Were Leaked in the XIII_LOGS File

• Email addresses: Personal and corporate email accounts belonging to real individuals
• Plaintext passwords: Unencrypted, fully readable passwords exactly as stored in the victim's browser
• URLs: The specific websites and login pages where each set of credentials was captured

Why Plaintext Passwords From Stealer Logs Enable Rapid Account Takeover

When stolen passwords are already in plaintext, the attack timeline compresses dramatically. There is no need for dictionary attacks, rainbow tables, or GPU-powered cracking rigs. The credentials are immediately usable, and automated tools can test thousands of logins per hour across popular websites. This process, known as credential stuffing, is one of the most common attack methods fueled by stealer log data.

Beyond the initial account takeover, the consequences branch into identity theft, financial fraud, and corporate data breaches. A compromised work email can give attackers a foothold inside an organization's network. A stolen banking login can lead to drained accounts. Personal information gathered from multiple compromised services can be assembled into a compleat identity profile and sold on dark web markets.

How XIII_LOGS Was Created by Infostealer Malware

The XIII_LOGS dataset was produced by infostealer malware, a widespread category of trojans that specialize in extracting saved credentials from web browsers. These malware programs are commonly distributed through phishing emails, trojanized software downloads, cracked applications, and malicious advertisements.

Once installed on a victim's computer, the infostealer targets browser password managers, pulling out every saved login credential along with associated cookies and autofill data. The stolen information is compiled into log files, organized by URL, email, and password, then transmitted to a command and control server. The attacker may use the data directly for account takeover or distribute it through Telegram channels and dark web forums. The XIII_LOGS file was shared freely on Telegram, making it accessible to anyone looking to exploit the stolen credentials.

Search Your Email to See If You Are in the XIII_LOGS Breach

HEROIC maintains one of the world's largest breach databases, with over 400 billion records spanning thousands of data leaks and stealer log distributions. The XIII_LOGS dataset is fully indexed in our system. Our free breach scanner lets you check your email address against this breach and every other breach we track in just a few seconds.

If your credentials appear in the results, you should change your password on every site where you used it immediately. Enable two-factor authentication on all accounts that support it, and switch to a password manager so each account has its own unique, strong password. These steps can prevent attackers from turning a single leaked credential into a cascade of compromised accounts.