Corey Nicholson
Cyber Incident Response Specialist @ TPG Telecom
About
I combine offensive and defensive cybersecurity to protect critical infrastructure across the entire lifecycle. With diverse experience spanning penetration testing, security operations, threat hunting, incident response, digital forensics, and secure software development, I leverage this broad skill set to proactively identify and investigate threats, while effectively managing complex cyber incidents to neutralize risks before they impact vital systems. Driven by a passion for solving hard problems in high-stakes environments, I thrive on turning cyber weaknesses into actionable defenses that keep vital systems online and secure.
Australia
Sydney
Computer & Network Security
Office Automation, Programming
Experience
Cyber Incident Response Specialist
TPG Telecom
Application Security Analyst
TPG Telecom
* Performed security code reviews leveraging SAST, DAST, and SCA tooling, supplemented with targeted manual penetration testing to identify critical and complex vulnerabilities. * Custom built and implemented a compliance automation tool to standardise codebase configuration assessments.
Cyber Security Associate (A&R)
TPG Telecom
* Performed incident investigations, analysed adversary TTPs, and produced actionable reporting on security events. * Tuned and optimised security tooling (SIEM, EDR, NDR, Email Security, Firewalls etc) to improve detection/control accuracy and reduce false positives. * Validated threat intelligence through proactive threat hunting, identifying exposure and uplifting detections to strengthen overall security posture. * Custom built a network security monitoring tool which detects and alerts against various types of network attacks.
Support Specialist
TPG Telecom
* Custom built a network troubleshooting tool after identifying a gap, rolled out to all customer support agents. * Developed and updated support procedures. * Assisted in training of support agents.
Cyber Security Analyst
Western Centre for Cybersecurity Aid & Community Engagement
* Supported cyber incident response and business continuity planning for SMEs. * Developed a quantum true random key generator, which was executed successfully on quantum hardware (thanks IBM!).
Cyber Security & Software Development (work exp)
Sydney Water
Education
Western Sydney University
Cyber Security and Behaviour
Top 2% - Deans Medal Award Recipient for Cyber Security
Corey Nicholson's Contact Information
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