Analyzing Network Traffic for Sensitive Data Leaks

n real-world cybersecurity scenarios, attackers often intercept and analyze network traffic to obtain sensitive information such as usernames, passwords, and confidential files. These risks are heightened in environments where unencrypted communication protocols like HTTP, FTP, SMTP, Telnet, and even misconfigured Kerberos are in use. This lab guides you through the process of using Wireshark"”a powerful network protocol analyzer"”to examine captured network data for potential leaks. You'll capture HTTP login attempts, extract images and files from packet captures, and analyze FTP and SMTP traffic for credential exposure. Additionally, you'll capture Telnet sessions to highlight the danger of plaintext authentication and study Kerberos protocol behavior to detect valuable metadata. By simulating common data leakage scenarios, this lab empowers you to proactively identify and secure vulnerable data in transit, providing a solid foundation for penetration testers and security analysts alike.