Alfredo “Arcen” Diaz
I’m a security-focused technologist documenting hands-on learning, labs, and projects across offensive and defensive security. This site serves as both a professional portfolio and a public knowledge base.
🎓 Certifications:
CompTIA Security+ • AWS Certified Cloud Practitioner
Certifications & Education
CompTIA Security+
Vendor-neutral certification covering core security principles including risk management, incident response, cryptography, and network security.
AWS Certified Cloud Practitioner
Foundational cloud certification covering AWS core services, cloud security concepts, identity and access management, and shared responsibility models.
Rice University Continuing Studies Cybersecurity Bootcamp — Certificate of Completion
Completed an intensive cybersecurity bootcamp focused on foundational security concepts, hands-on labs, and applied problem-solving across networking, system security, and defensive techniques.
Technical Focus Areas
- Network Security & Protocol Analysis
- Cloud Security Fundamentals (AWS)
- Incident Response & Threat Detection
- Linux & Windows Internals
- Python for Security Automation
- TryHackMe & Hands-on Labs
- Security Documentation & Technical Writing
Learning Notes & Practical Labs
I maintain structured notes to reinforce learning, track progress, and demonstrate applied understanding — not just theory.
- 🛡️ Network Scanning & Enumeration
- 🧪 Python Security Tools & Scripts
- 🔍 Digital Forensics Fundamentals
- 🧠 Threat Modeling & Defensive Concepts
Professional Background
I am an active-duty member of the United States Coast Guard, pursuing a career path in cybersecurity and cyber operations.
I have been selected to attend the Coast Guard’s Cyber Mission Specialist “A” School, where I will continue developing technical skills aligned with defensive and offensive security operations.
This experience complements my civilian certifications and hands-on lab work, reinforcing a disciplined, security-first approach to engineering and documentation.
Contact
For professional inquiries, collaboration, or questions about my work, please use the form below or connect with me through GitHub.
💻 GitHub
About me
I’m driven by curiosity, discipline, and continuous improvement. My background combines structured learning, self-directed labs, and detailed documentation to build strong fundamentals in security engineering.
I believe good security work is quiet, intentional, and well-documented — which is why this site exists.
This portfolio is intentionally transparent: you’ll see what I’m learning, how I think, and how I solve problems.