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alexojocyber/README.md

Hi, I'm Alex Ojo 👋

Cybersecurity Student | Blue Team | SOC & GRC | Network Security | Google & IBM Certified

LinkedIn GitHub Portfolio


👨🏿‍💻 About Me

I'm a 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, inter-VLAN routing, Cisco IOS, subnetting, STP troubleshooting
  • 🐍 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 TCP/IP Wireshark Nmap

Programming & Tools

Python Bash Linux Git VirtualBox


🔬 Featured Projects

🏢 5-VLAN Enterprise Network Security Lab (NEW)

Designed and implemented a 5-department segmented enterprise network using Router-on-a-Stick, IEEE 802.1Q trunking, DHCP, and /26 CIDR subnetting in Cisco Packet Tracer. Diagnosed and resolved STP trunk port blocking issues. Security relevance mapped to NIST SP 800-53 (SC-7) and ISO 27001 Annex A.13.

Skills: VLANs · Inter-VLAN Routing · Cisco IOS CLI · Subnetting · STP · Network Security 🔗 View Repository


🔐 CVE Validation & Vulnerability Assessment Lab (NEW)

Performed host discovery, port scanning, service detection, and NSE scripting using Nmap against Metasploitable2. Successfully identified and validated CVE-2011-2523 (vsFTPd 2.3.4 Backdoor) in a controlled environment. Documented findings and remediation recommendations in a structured report.

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


🐍 Python Security Automation Toolkit (NEW)

Built three Python-based security tools: SHA-256 File Integrity Checker, VirusTotal Hash Lookup Utility (API integration), and Nmap-based Network Port Scanner. Applied Hashlib and Socket Programming to automate common security operations tasks.

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


🚨 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 mapped to NIST SP 800-61, MITRE ATT&CK, ISO 27001, GDPR and PCI-DSS.

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 across Critical, High, Medium, and Low severity. 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, ingesting Linux auth logs and writing 4 SPL queries. Visualised attack patterns across 4 dashboard panels mapped 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 authentication logs to reconstruct the full attack timeline, and configured Fail2Ban for automated IP blocking — containing the attacker after 3 failed login attempts within 5 minutes.

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


🤝 Project Lazarus — Collaborative Blue Team IR Lab

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

Skills: Digital Forensics · Blue Team · Incident Investigation · Collaboration 🔗 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
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 · Authentication
SIEM-Investigation-Lab SOC investigations — triage, IOC hunting, reports SOC · Threat Hunting
Wireshark-Network-Analysis Packet analysis — TCP/IP, DNS, HTTP, ICMP Network Analysis · Wireshark
Linux-Security-Projects Hands-on Linux hardening and security configs Linux · System Hardening
Project-Lazarus Collaborative Blue Team forensic IR lab Digital Forensics · Blue Team
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.

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  1. 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.

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  2. ACL-Security-Lab ACL-Security-Lab Public

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

  3. 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.

  4. Wireshark-Network-Analysis Wireshark-Network-Analysis Public

    Packet analysis and network investigation using Wireshark, including PCAP files, findings, and security observations.

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  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.