Grishon Muthee | Cybersecurity Specialist | SOC Analyst

Grishon Muthee Njenga

Cybersecurity Specialist | SOC Analyst | Ethical Hacker| Aerospace Engineer

About Me

I’m Grishon Muthee, a Cybersecurity Specialist with a Bachelor's Degree in Aerospace Engineering. Although I earned my Bachelor’s degree in Aerospace Engineering, my passion for technology and computing ultimately led me to transition into cybersecurity, where I found my true professional calling. My engineering background has been instrumental in shaping my analytical thinking, problem-solving ability, attention to detail, and systems-based approach to complex challenges. Today, I combine that engineering mindset with hands-on cybersecurity expertise to solve security problems with both technical depth and structured, strategic thinking.

My cybersecurity expertise spans Penetration Testing, Web Security, Linux and Windows Security, Python Programming, Network Technologies, Malware Analysis, SIEM, and broader cybersecurity operations. I hold Multiple Certifications across various cybersecurity domains and have distinguished myself as a Highly Skilled Capture The Flag (CTF) solver, ranking within the top 5% globally on platforms such as TryHackMe, PicoCTF, Hack The Box, and Root-Me. My hands-on experience includes configuring and deploying security tools, conducting malware analysis, and performing physical and digital security assessments.

Professional Experience

Cybersecurity Specialist — Levian Technologies

May 2021 – Mar 2026

Supported secure system administration activities including user access monitoring, security configuration enforcement, and identity-related troubleshooting across Linux and Windows environments.
Managed security monitoring and incident response using SIEM tools (Splunk), improving detection and response efficiency by 30% through optimized alert workflows and log analysis.
Assisted in enforcing access control policies, firewall rules, and endpoint security configurations, reducing unauthorized access risks by 25%.
Conducted system and network troubleshooting, resolving security and access-related issues with a 90% first-pass resolution rate in monitored environments.
Collaborated with internal teams to maintain secure system operations aligned with organizational security policies and compliance requirements.

Cyber Security Analyst — PhantomNet Security

Dec 2019 – Feb 2021

Conducted security assessments, improved client security posture by 17%, and implemented SIEM-based monitoring solutions.
Managed security monitoring and user-focused incident response, improving issue resolution time by 25 % through structured triage processes.
Supported access control reviews, user permission audits, and security policy enforcement across enterprise environments.
Assisted in system hardening and endpoint protection deployment, improving baseline security coverage by 20%.
Delivered technical support for security tools and user access issues, ensuring stable and secure system usage.
Participated in security awareness training delivery, improving user compliance behavior by about 20%.

Junior Cybersecurity Consultant — TechSecure Innovations

Jan 2019 – Dec 2019

Assisted in system administration tasks including endpoint security deployment, access control setup, and security monitoring.
Supported troubleshooting of network, authentication, and access-related issues across internal systems.
Participated in security audits and compliance checks, helping improve system configuration adherence by 15%.
Assisted in documentation of security processes and incident handling workflows.

Education

Bachelor of Science in Aerospace Engineering
Kenyatta University

Skills & Technologies

CyberSecurity

Ethical Hacking
Digital Forensics
Incident Response
SOC Operations
Networking

Applications

Splunk
Nessus
OpenVas
IDA Pro
Terraform

Security Tools

Nmap
Metasploit
Wireshark
Burp Suite
Wazuh

Operating Systems

Linux
Windows
macOS
Cloud (AWS / Azure)
Containers

Programming

Python
Shell
Javascript
C++
HTMl & CSS

Networking

Network Level Attacks
Cloud Computing
Social Engineering
TCP/IP
Network Protocols

Projects

Selected cybersecurity, automation, and security engineering projects demonstrating hands-on technical capability and real-world problem solving.

SOC Monitoring Lab with SIEM Splunk

A real-world Security Operations Center (SOC) environment using Splunk as a SIEM platform.

Keylogger-Detection-Analysis-Lab

Analyzed keylogger behaviour in a controlled lab and build detection signatures, telemetry pipeline, dashboards, and a write-up

Cowrie Honeypot

Deployed, simulated, and analyzed a modern SSH honeypot using Cowrie inside Docker.

Glastopof Honeypot

A specialized, low-interaction web application honeypot designed to act as a decoy, emulating vulnerable web servers to attract and analyze attackers.

Playwright Python Automation

A Playwright Python repository for web automation and end-to-end testing, including Playwright sync API examples, locator strategies, browser contexts, and reliable cross-browser automation for a Bot

HackerRank Coding Challenges

Cloud Firewalls

Implemented real-time inspection of inbound and outbound traffic, including advanced threat protection against exploits, malware, and viruses.

Incident Response Playbooks

Documented and automated response workflows for common cyber incidents.

Capture the Flag (CTF) Challenges

Hands-on offensive security practice through Capture The Flag competitions, cyber ranges, and security labs across leading cybersecurity platforms.

Tryhackme

Ranked Top 5% globally. Solved CTFs, did rooms, and earned badges on: Web Hacking, Linux Fundamentals & PriVesc, Nmap, Active Directory, Metasploit, Shells & Privilege Escalation, Attacking LLMs, IDOR, SSRF, Subdomain Enumeration, Powershell, Windows Security, Nessus, Yara, MITRE, MISP, OpenVas, Malware Analysis, Attacking Kerberos, Wireshark, Splunk, and, OWASP.

Cylab Academy(formerly PicoCTF)

Solved 105+ CTFs on web, binary exploitation, and cryptography. Covered Python Programming, The Shell, Disk & Packet Analysis, Binary Exploitation, FotoForensics, File Inclusion, CNC Machine Codes, Ciphers, Hex Editing, Web Server Logs, Reverse Engineering, Tesseract, Katana, RSA Algorithm, Autopsy Disk Analysis, Wifi Hacking, and HTTP-IP Restriction Bypass.

Hackthebox

Active participant in labs, boxes, and red team simulations. Completed challenges covering Hcxdumptool Wifi Hacking tool, HTTP Verbs, Browser Fingerprinting, Deobfuscating Javascript, XML External Entity (XXE) Injection, and Directory Traversal.

Rootme

31+ hands-on CTFs on exploitation, Reverse Engineering, Sensitive Data Exposure, Domains, Automation, Cowrie & Glastopof Honeypots, Git, Docker Containerisation, Linux Hardening, OSI Model, TCP/IP Model, Azure, OS Security, and Snort.

HackThisSite

Reached the Pentitioner (605 Points) Rank by solving over 26 challenges covering: Stego, Forensic, Javascript, Cryptography, Unix Directories, Google Dorking, .env files, SSH, Zoom Bombs, CRLF(Carriage Return Line Feed) and Apache Vulnerabilities. Practical web exploitation and real-world ethical hacking challenges.

CyberTalents

Completed 45+ labs covering: Linux skills, Web Security, XSS, Directory Traversal, Burp Suite, SQLi, Digital Forensics, Steganography, Code & Command Injection, Netcat, Memory Forensics, Reverse Engineering, Hashing, Encoding, Obfuscation, WSL2 and Cipher Cracking.