TikTok logoCurrently an Extern @TikTok
Xavier Ijewere portrait

Cybersecurity & Systems Security | M.S. Cybersecurity Student

As a Cybersecurity graduate student, I specialize in enterprise system security and system administration, equipping myself for a successful career in protecting critical infrastructures.

Work samples

Explore my hands-on projects in IoT cybersecurity, showcasing skills in building and defending real infrastructures.

  • Hydroficient IoT Cyber Defense Externship
    Hydroficient logo

    Hydroficient · Aug 2026 · ✅ Verified by Extern

    Hydroficient IoT Cyber Defense Externship

    Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

    Python ProgrammingData AnalysisThreat ModelingDashboard Development

About me

As a Cybersecurity graduate student, I specialize in enterprise system security and system administration, equipping myself for a successful career in protecting critical infrastructures.

I’m a Computer Science graduate pursuing an M.S. in Cybersecurity and Privacy at UCF. I enjoy learning how systems work, identifying where they can fail, and building the technical skills needed to secure resilient infrastructure.

Externships

TikTok: Social Media Content & Brand Strategy Externship

TikTok

Experience

IT Help Desk Intern

Florida Southern College · Sep 2025 - May 2026

Education

Florida Southern College

Bachelors Degree in Computer Science · Class of 2026

University of Central Florida

MSc. Cybersecurity and Privacy · Class of 2028

Skills

IoT SecurityCyber DefenseTLSmTLSProject Management

✅ Verified by Extern

Hydroficient IoT Cyber Defense Externship

Build, hack, and defend real IoT infrastructure, then hand your security playbook to an actual company. You’ll launch realistic cyberattacks, from spoofing and replay attacks to unauthorized shutoffs, and implement defenses like TLS and mTLS.

Python ProgrammingData AnalysisThreat ModelingDashboard Development

Overview

The work examined a simulated HYDROLOGIC flow system for a 500-room hotel, mapping data flows and inventorying connected assets. STRIDE threat modeling produced diagrams and an executive summary with three prioritized controls. The project also implemented TLS on an MQTT pipeline, produced a Device Provisioning Policy for mTLS, generated anomaly-injected sensor logs, validated replay defenses

Hydroficient IoT Cyber Defense Externship

What I've accomplished

I delivered STRIDE threat-model diagrams and an executive summary with prioritized controls; a Google Colab Python sensor-log generator and exported anomaly-injected logs; a mapped MQTT topic hierarchy with attacker-visibility analysis; TLS and certificates on the MQTT pipeline with a measured 0.45% overhead; a Device Provisioning Policy covering mTLS and certificate lifecycle; results from 12

Project breakdown

View all works