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alexojocyber/README.md
Alexojocyber Professional Banner

Hi, I'm Alex Ojo 👋

Cybersecurity Student | Security Operations (SOC) | Networking | Windows & Linux Administration | IT Support

LinkedIn GitHub Portfolio Projects


👨🏿‍💻 About Me

I'm a Final Year Cybersecurity Undergraduate at Lead City University, Ibadan, currently completing a six-month Defensive Security internship (SIWES) at HiiT PLC — building real hands-on experience in:

  • 🔵 Security Operations (SOC) — SIEM monitoring, log analysis, brute-force detection, incident investigation
  • 🛡️ GRC & Compliance — Risk assessments, ISO 27001, NIST CSF, PCI-DSS, GDPR documentation
  • 🌐 Network Security — VLAN segmentation, ACLs, NAT, DHCP, OSPF, inter-VLAN routing, Cisco IOS
  • 🐍 Security Automation — Python tools for file integrity monitoring, hash analysis, and network scanning
  • 🐧 Linux Security — System hardening, SSH configuration, access control, log investigation

🎯 Seeking: Entry-level SOC Analyst, Cybersecurity Analyst, IT Support, or Blue Team role


🚀 Currently

  • 🔧 Completing SIWES defensive security internship at HiiT PLC
  • 📚 Progressing through CEH concepts and CompTIA Security+/Network+ fundamentals
  • 🔨 Building a Jira SOC Ticketing System Lab — end-to-end SOC workflow with Splunk integration
  • 🤝 Open to remote freelance, internship, or entry-level opportunities

🛠️ Technical Skills

Security & SOC

SIEM MITRE NIST ISO27001 GRC Incident Response

Networking

Cisco VLANs NAT ACL OSPF Wireshark Nmap

Programming & Tools

Python Bash Linux Git VirtualBox


🔬 Featured Projects

🌐 Network Security Labs (Cisco Packet Tracer) (NEW)

A series of enterprise networking labs building progressively from basic routing to advanced security controls:

Lab Description Key Skills
5-VLAN Enterprise Network 5-department VLAN segmentation with Router-on-a-Stick, STP troubleshooting VLANs · Subnetting · STP
DHCP Multi-VLAN Lab Centralised DHCP across 5 VLANs, DHCP security concepts DHCP · DHCP Snooping
ACL Security Lab Extended ACLs enforcing least-privilege between departments, mapped to NIST AC-3 ACLs · Lateral Movement Prevention
OSPF Dynamic Routing Lab OSPF Area 0 across 3 routers, route injection security awareness OSPF · Dynamic Routing
NAT & Port Forwarding Lab PAT + static NAT, port forwarding attack surface, MITRE T1046/T1133 NAT · PAT · NIST SC-7

🚨 Incident Response Playbook — CipherPay Ltd

Developed a full enterprise IR Playbook for a fictional fintech startup covering Brute Force, Phishing, and Data Breach incidents. Includes 18 response checklists, 5 communication templates, and a lessons learned framework.

Skills: Incident Response · NIST SP 800-61 · MITRE ATT&CK · ISO 27001 · GDPR · PCI-DSS 🔗 View Repository


📊 GRC Security Audit — CipherPay Ltd

Full security audit and risk assessment for a fictional fintech startup. Identified 14 risks, assessed 26 NIST CSF controls and 18 ISO 27001 controls. Delivered a 90-day remediation roadmap.

Skills: GRC · Risk Assessment · NIST CSF · ISO 27001 · PCI-DSS · GDPR 🔗 View Repository


🔍 Splunk SIEM Lab — Brute Force Detection

Built a real-time SOC detection dashboard in Splunk Cloud, writing 4 SPL queries, visualising attack patterns across 4 panels, and mapping to MITRE ATT&CK (T1110) and NIST controls AC-7, AU-2, SI-4.

Skills: Splunk Cloud · SPL · SIEM · Dashboard Creation · MITRE ATT&CK 🔗 View Repository


🛡️ SSH Brute Force Detection & Defense Lab

Simulated an SSH brute-force attack on Ubuntu Linux, investigated auth logs to reconstruct the full attack timeline, and configured Fail2Ban for automated IP blocking within 5 minutes.

Skills: SSH Security · Log Analysis · Fail2Ban · Incident Response · Linux Security 🔗 View Repository


🐍 Python Security Automation Toolkit

Built three Python security tools: SHA-256 File Integrity Checker, VirusTotal Hash Lookup Utility, and Nmap-based Network Port Scanner using Hashlib, Socket Programming, and VirusTotal API integration.

Skills: Python · Hashlib · Socket Programming · VirusTotal API · Security Automation


🔐 CVE Validation & Vulnerability Assessment Lab

Performed NSE scripting with Nmap against Metasploitable2. Successfully identified and validated CVE-2011-2523 (vsFTPd 2.3.4 Backdoor) in a controlled environment with full documented findings.

Skills: Nmap · NSE Scripts · CVE Analysis · Vulnerability Assessment


🤝 Project Lazarus — Collaborative Blue Team IR Lab

Collaborative forensic investigation lab on CyberDefenders.org covering evidence collection, timeline reconstruction, and attacker attribution.

Skills: Digital Forensics · Blue Team · Incident Investigation 🔗 View Repository


📁 All Repositories

Repository Description Skills
5-VLAN-Inter-VLAN-Routing-Lab 5-VLAN enterprise network with Router-on-a-Stick Cisco · VLANs · STP · Subnetting
DHCP-Multi-VLAN-Lab Centralised DHCP across 5 VLANs with security concepts DHCP · VLANs · Cisco IOS
ACL-Security-Lab Extended ACLs enforcing least-privilege — NIST AC-3, MITRE T1021 ACLs · Network Security
OSPF-Routing-Lab OSPF dynamic routing across 3 routers — Area 0 OSPF · Dynamic Routing
NAT-and-Port-Forwarding-Lab PAT + Static NAT + Port Forwarding — NIST SC-7, MITRE T1046 NAT · PAT · Security
STP-Spanning-Tree-Lab Spanning Tree Protocol config for loop prevention and link redundancy STP · Switching · Cisco IOS
Network-Monitoring-and-Troubleshooting-Lab Diagnosing and resolving connectivity issues across a simulated network Network Troubleshooting · Monitoring
DNS-and-Web-Server-Lab DNS resolution and web server configuration in a lab environment DNS · Web Servers · Cisco IOS
SSH-Remote-Management-Lab Secure SSH-based remote device administration and access control SSH · Remote Administration
active-directory-home-lab Windows Server Active Directory domain — users, groups, GPOs Active Directory · Windows Server
Incident-Response-Playbook-CipherPay Full IR playbook — NIST, MITRE ATT&CK, ISO 27001 GRC · Incident Response
GRC-Security-Audit-CipherPay Full GRC audit — NIST CSF, ISO 27001, PCI-DSS, GDPR GRC · Risk Assessment
Splunk-SIEM-Lab Splunk Cloud detection dashboard + SPL queries SIEM · Splunk · Blue Team
SSH-BruteForce-Detection-Lab SSH attack simulation + Fail2Ban defense Linux · Incident Response
Python-Log-Parser Automated SSH brute-force detection + reporting Python · Automation
Enterprise-SIEM-Lab PAM brute-force detection + MITRE ATT&CK mapping Linux · SIEM
SIEM-Investigation-Lab SOC investigations — triage, IOC hunting, reports SOC · Threat Hunting
Wireshark-Network-Analysis Packet analysis — TCP/IP, DNS, HTTP, ICMP Network Analysis
Linux-Security-Projects Hands-on Linux hardening and security configs Linux · System Hardening
Project-Lazarus Collaborative Blue Team forensic IR lab Digital Forensics
System-Health-Checker-Bash Bash script for Linux system health monitoring Bash · Automation

📜 Certifications

Certification Issuer Year
Google Cybersecurity Professional Certificate Google (Coursera) 2025
IBM Cybersecurity Analyst Professional Certificate IBM (Coursera) 2025
CompTIA Security+ In Progress 2026
CEH (Certified Ethical Hacker) In Progress 2026

📊 GitHub Stats

Alex's GitHub Stats Top Languages


📬 Contact

📧 ojoo.alexxx@gmail.com

LinkedIn Portfolio


"Security is not a product, but a process." — Bruce Schneier

🔄 Updated regularly as I build new projects and gain new skills.

Pinned Loading

  1. active-directory-home-lab active-directory-home-lab Public

    Built and configured an Active Directory home lab using Windows Server 2022, including DNS, organizational units, users, groups, and network configuration, while documenting virtualization and clie…

  2. 5-VLAN-Inter-VLAN-Routing-Lab 5-VLAN-Inter-VLAN-Routing-Lab Public

    Designed and implemented a 5-VLAN enterprise network using Router-on-a-Stick, trunking, and inter-VLAN routing in Cisco Packet Tracer.

  3. ACL-Security-Lab ACL-Security-Lab Public

    Cisco Packet Tracer security lab demonstrating extended ACLs to control traffic between VLANs in an enterprise network.

  4. DHCP-Multi-VLAN-Lab DHCP-Multi-VLAN-Lab Public

    Multi-VLAN DHCP network built in Cisco Packet Tracer using a Cisco 1941 router, Router-on-a-Stick, and dynamic IP allocation across five VLANs.

  5. SSH-BruteForce-Detection-Lab SSH-BruteForce-Detection-Lab Public

    SOC investigation lab simulating SSH brute-force attack detection, IP analysis, and firewall blocking using Linux logs.

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  6. OSPF-Routing-Lab OSPF-Routing-Lab Public

    Cisco Packet Tracer lab demonstrating dynamic routing with OSPF across three routers.