Raymond User

In my Linux Networking & Cybersecurity Lab, I built a controlled Kali Linux and Ubuntu environment using VMware Workstation. I used Nmap to identify open ports and enumerate services, and Wireshark to inspect ICMP and TCP traffic.

I configured and troubleshot SSH access, tested key-based authentication, and documented SSH hardening. I also reviewed Linux authentication logs and examined a phishing framework’s source code for defensive learning.

As an App Tester at Sizzle AI, I tested application updates and features, documented functional and usability issues, and re-tested fixes. I’m a Computer Science undergraduate at Enugu State University of Science and Technology (ESUT), developing practical cybersecurity skills.