I build practical data and security skills through project work and hands-on externships, preparing to start a career in data analytics.
Portfolio items include hands-on work with IoT cyber defense, attacks and defenses, and other project-based learning that build analytics and security experience.
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Hydroficient · Mar 2026 · ✅ Verified by Extern
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.
Developed a real-time security dashboard (Streamlit) to monitor pipeline health, detect anomalies, and visualize system threats. Identified vulnerabilities such as eavesdropping, spoofing, replay attacks, and denial-of-service (DoS). Conducted security testing and attack simulations (including replay attacks), and evaluated TLS performance to identify vulnerabilities and strengthen system defenses. Built and validated an end-to-end IoT security system that simulates real-world infrastructure, detects anomalies, and protects against attacks such as spoofing and replay attacks.
I build practical data and security skills through project work and hands-on externships, preparing to start a career in data analytics.
I am Mani Coleman, a third-year Information Technology student pursuing a bachelor's degree with a focus on data analytics. I have limited professional experience and am building practical skills through hands-on projects, including an IoT cyber defense externship that covered attack techniques and network-level defenses.
Externships
Hydroficient IoT Cyber Defense Externship
Hydroficient
Experience
Cyber Security Analyst Intern
Webacy · November- November 2024
Cyber Defense Extern
Hydroficient · February - March,2026
Cyber Security Analyst Intern
Webacy · October - October,2025
Education
CENTRAL UNIVERSITY
Bachelor of Science in Information and Technology · Class of 2026
SWEDRU SECONDARY SCHOOL
Diploma In Visual Arts · Class of 2022
Skills
✅ Verified by Extern
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.
The work analyzed The Grand Marina's HYDROLOGIC IoT pipeline, built and attacked an MQTT-based sensor system, then implemented layered defenses and measured their performance. Deliverables include a threat model, Python sensor generator, secured TLS/mTLS pipeline, provisioning policy, replay-defense experiments, a live dashboard, and an optional anomaly model. The work was awarded Top Performer
I delivered a complete security package for a simulated HYDROLOGIC deployment: a professional threat model, Python sensor log generator, insecure and then TLS/mTLS-secured MQTT pipeline, a provisioning policy, replay-attack defenses with measured rejection rates, a real-time dashboard, and an integrated Isolation Forest anomaly detector.
Developed a real-time security dashboard (Streamlit) to monitor pipeline health, detect anomalies, and visualize system threats. Identified vulnerabilities such as eavesdropping, spoofing, replay attacks, and denial-of-service (DoS). Conducted security testing and attack simulations (including replay attacks), and evaluated TLS performance to identify vulnerabilities and strengthen system defenses. Built and validated an end-to-end IoT security system that simulates real-world infrastructure, detects anomalies, and protects against attacks such as spoofing and replay attacks.
