Cybersecurity Portfolio
John Dominick Limpag
Senior SOC Specialist / DFIR Analyst / Threat Hunter
01 Profile
Currently serving as Senior SOC Specialist at SupportZebra, leading incident response operations, managing endpoint detection platforms, and ensuring compliance across multiple regulatory frameworks.
02 Experience
- Lead DFIR and SOC operations using Microsoft Defender (Global Admin), Sentinel, and Splunk SIEM
- Manage Palo Alto Cortex XDR, Sophos Firewall, Microsoft Intune, and Exchange
- Administer NinjaOne RMM for endpoint monitoring and patch management
- Handle ticketing workflows via ServiceNow and ConnectWise
- Conduct vulnerability assessments; guide NIST, FedRAMP, and ISO 27001 compliance
- Supervise 24/7 Security Operations Center team
- Monitored network activity across Meraki, FortiGate, and Palo Alto firewall environments
- Utilized Datadog SIEM for log correlation and anomaly detection
- Handled incident response, priority alert reporting, and security improvement processes
- Conducted network and web application penetration testing (VAPT)
- Delivered manual exploitation findings and detailed remediation reports
- Investigated incidents from detection to containment
- Developed incident response playbooks and forensic analysis workflows
- Leveraged Tines for security automation and alert enrichment
03 Skills & Tools
04 Featured Project
A fully custom browser-based malware analysis and threat intelligence platform built from scratch with zero backend dependencies. Designed to augment SOC analyst workflows with powerful client-side intelligence tools.
Comprehensive 18-page technical malware analysis covering static analysis, dynamic sandboxing, encryption mechanisms, EternalBlue propagation, kill switch discovery, IOC mapping, and full defensive recommendations. Produced for educational and portfolio purposes.
05 Certifications
★ GOLD
Earned the GOLD badge — Security Blue Team's highest recognition — by completing 24 real-world practical labs and passing a grueling 24-hour live incident response exam. Demonstrated hands-on proficiency across 5 core blue team domains.
06 CTF Competitions
Placed 2nd in Zamboanga Peninsula's regional Hack4Gov government-sponsored Capture the Flag competition, demonstrating advanced offensive and defensive security skills.
🏅 2nd Place40
Ranked in the global Top 40 at Google CTF 2022 — one of the most prestigious and technically challenging CTF competitions worldwide, participated solo or as part of a team.
🌐 Global Top 4010
Achieved Top 10 ranking at NahamCon CTF 2023 as part of a coordinated team. NahamCon is a globally recognized security conference and CTF, attracting thousands of participants.
🤝 Team · Top 10 Global07 Education
CoE
- Established ADZU's first student-led cybersecurity organization
- Organized CTF competitions and career mentoring sessions
- Collaborated with the university IT department to harden infrastructure
Open to opportunities
& collaboration
Available for SOC leadership, DFIR consulting, and penetration testing engagements