Osborn Tettey

Osborn Nartey

Offensive Security Enthusiast | CTF Competitor | Python Developer | Penetration Tester | Ethical Hacker

0206782232

Profile

Driven and detail-oriented Computer Science student with a specialization in cybersecurity, combining academic rigor with hands-on expertise in penetration testing, ethical hacking, and reverse engineering. Adept at identifying vulnerabilities, fortifying systems, and engineering innovative security solutions. Recognized for top-tier performance in competitive hacking (CTFs), including podium finishes in national events like picoCTF and Hack the Box challenges, showcasing strategic problem-solving and rapid exploitation skills.

Education

Kwame Nkrumah University of Science and Technology

BSc. Computer Science (Expected June 2026)

Savior Senior High School

W.A.S.S.C.E (Science) 2019-2023

Professional Experience

Cybersecurity Intern

Cyber & Forensics Security Solutions | Apr 2025 - May 2025

  • Conducted vulnerability assessments for 15+ client systems
  • Assisted in forensic analysis of security breaches

Security Intern

HackSecure | Apr 2025 - May 2025

  • Developed Python scripts for automated security testing
  • Researched emerging threats in peer-to-peer encryption

ICT Intern

GIFEC | Aug 2024 - Dec 2024

  • Conducted vulnerability assessments on client systems
  • Performed penetration testing on network infrastructure

Technical Skills

Offensive Security

Penetration Testing • Reverse Engineering • Vulnerability Assessment

Development

Python (Advanced) • C++ • JavaScript • Bash

Tools

Metasploit • Wireshark • Burp Suite • Ghidra

Featured Projects

GHOST Encrypted Messenger

Secure peer-to-peer messaging system using AES-256 encryption

Python Cryptography

Facial Recognition System

OpenCV-based attendance tracking with 92% accuracy

Python OpenCV

Titan Multi-platorm Ransomware

A ransomware that encrypts files in the documents directory

Java Cryptography

Certifications

Junior Pentester

TryHackMe | 2025

Ethical Hacking

Udemy | 2025