Security Systems Specialist

Security Systems Specialist

Eldon Gabriel

Secure Infrastructure | System Hardening | GRC to Technical Enforcement

I implement practical security controls that harden enterprise systems, investigate operational issues, and reduce organizational risk. As an ISC² Certified Cybersecurity Professional (CC) with 100+ documented technical labs and reports, my work focuses on securing real IT environments through repeatable system administration and defensive security practices.

My portfolio follows a Proof of Work methodology, where every security concept is demonstrated through hands-on implementation and documented technical analysis. These projects include system hardening, network security configuration, incident troubleshooting, and infrastructure protection using industry-aligned security frameworks.

The goal is simple: convert security theory into operational controls that are measurable, defensible, and ready for real-world environments.

This portfolio is continuously updated as new labs, projects, and troubleshooting scenarios are completed. It serves as a working reference of applied security practices, documenting both implementation and problem resolution across systems, networks, and security operations.

What I Bring to an Organization

System Hardening & Control Enforcement

I implement enforced security controls across Windows and Linux systems to reduce attack surface and ensure least privilege at the system level. This includes CIS Benchmarks-aligned Group Policy, registry hardening, and controlled IP-based access restrictions.

Network Security & Defense

I secure network environments by identifying misconfigurations, enforcing firewall rules, and validating access controls. My work includes pfSense configuration, IPsec VPN troubleshooting, and traffic and DNS analysis to detect unauthorized activity.

GRC Implementation & Operational Resilience

I translate governance and risk frameworks into enforced technical safeguards. This includes NIST-aligned control implementation, risk register mapping, policy enforcement, and post-breach remediation to ensure controls remain effective and auditable.

Explore Key Career Milestones & Certifications

Foundational Mentorship

George H. Ross
George H. Ross
NBC’s ‘The Apprentice’ Judge & Mentor

Instilled a disciplined evaluation of risks and thorough investigative practices essential for proactive threat hunting and forensic accuracy.

Wahida Clark
Wahida Clark
4x NYT Bestselling Author & Mentor

Reinforced the importance of clear communication and technical storytelling to translate critical risks into actionable business insights.

See My Real-World Technical Experience

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Detecting System Anomalies with SAR

A field note on using SAR to monitor system performance, establish baselines, and detect anomalies across CPU, memory, disk, and network resources.

Email Pattern Recognition with OSINT

A hands-on OSINT exercise focused on identifying and validating target email addresses using public PDF documents and email verification tools.