Stolen Napoleon Corp Data: 24,537 Records Leaked on Dark Web

HEROIC's threat intelligence team uncovered a stealer log attributed to Napoleon Corp circulating on dark web marketplaces. This data set contains 24,537 stolen records, each representing a real person whose device was infected with credential-harvesting malware.

Plaintext Passwords Leave Victims Immediately Vulnerable

All passwords in the Napoleon Corp data set were captured and stored in plaintext form. This means every credential is instantly usable by any attacker who obtains the file, with zero effort needed to decrypt or crack them. When passwords are exposed in plaintext, the window for attackers to exploit them begins immediately, often before victims have any indication that their systems were compromised.

What Was Exposed

• Email Addresses — personal and corporate accounts used as login credentials across multiple platforms
• Plaintext Passwords — captured directly from browsers and password managers without encryption
• URLs — specific websites and web applications where victims entered their credentials

The Threat of Credential Stuffing After a Breach

With 24,537 email and password pairs at their disposal, attackers can launch large-scale credential stuffing attacks against major online services. These automated attacks exploit the widespread habit of password reuse by testing each stolen combination against banking portals, cloud storage services, social media accounts, and enterprise applications. A single valid match can open the door to financial theft, data exfiltration, or deeper network intrusion.

Stealer Logs: The Infostealer Malware Pipeline

Napoleon Corp is the label for a stealer log collection generated by infostealer malware operating on compromised devices. This type of malware infiltrates systems through malicious downloads, phishing emails, or compromised websites, then silently harvests stored browser credentials, session tokens, and form data. The collected information is packaged into logs that are sold in bulk on underground forums, giving buyers ready-made access to thousands of accounts.

Check If Your Credentials Were Exposed

HEROIC's breach database contains over 400 billion compromised records collected from data breaches, stealer logs, and dark web sources worldwide. Run a free scan with HEROIC's breach checker to find out if your email or password was included in the Napoleon Corp leak or any other known compromise.