These files are usually the byproduct of data breaches, phishing campaigns, or malware (infostealers). Once collected, they are organized into text files or databases and sold on dark web marketplaces.
The final fullz.txt is advertised on dark web markets or Telegram channels. Pricing is surprisingly low: fullz.txt
The creation, distribution, and use of "fullz.txt" files are illegal in many jurisdictions. Laws such as the General Data Protection Regulation (GDPR) in the European Union, the California Consumer Privacy Act (CCPA) in California, USA, and various international data protection laws regulate the handling of personal data and impose strict penalties for unauthorized collection, distribution, and use of such data. These files are usually the byproduct of data