"Charter.net.txt" files are typically text-based data exports containing user credentials or email lists associated with Spectrum/Charter Communications, often appearing as marketing lists, email backups, or in cybercriminal breach datasets. These files are generally used to organize email addresses or username:password combinations for marketing or, frequently, for credential stuffing attacks. For security, individuals should verify if their information was part of a breach and update credentials on the official Spectrum/Charter website.