Penetration Testing
Hands-on offensive security engagements with a focus on practical exploit paths and impact.
Security Engineer · Builder · Researcher
Gaanesh Theivasigamani
InfoSec Undergraduate (NUS) · Security Engineer
Offensive security, digital forensics, and automating defenses.
6
Industry certifications
7
Security roles & internships
3
Focus areas
whoami
Hey there! I'm Gaanesh, an Information Security undergraduate at the National University of Singapore. I live at the intersection of penetration testing, digital forensics, and building CTF challenges. Whether I'm automating detection workflows or tearing through binaries, I'm happiest when learning and sharing battle-tested tradecraft. Feel free to reach out – I won't byte ;)
Digital Forensics
Incident response, evidence acquisition, and root-cause analysis across hybrid environments.
Security Automation
Agentic AI, RAG pipelines, and workflow automation to scale cyber operations.
ls -la ~/experience
2026
GIC Professionals Programme (GPP) - Technology Track (Cybersecurity)
UpcomingGIC
Mar 2026
- Returning Full-time Analyst for the 2026 GIC Professionals Programme (GPP) - Technology Track (Cybersecurity).
- Starting March 2026.
Cybersecurity Intern
UpcomingGovTech Singapore
Jan-Mar 2026 • 3 months
- Incoming Cybersecurity Intern at the Cyber Security Group (CSG).
- Project Title: Agentic AI for Cybersecurity Operations.
- Focus on applying agentic AI to enhance SOC efficiency and automate threat detection workflows.
2025
Vulnerability Researcher
PresentNational University of Singapore (NUS)
Jul 2024 - Present
- Part of the NUS Vulnerability Disclosure Programme
- Conducted in-depth penetration testing on various NUS infrastructures, identifying and reporting security vulnerabilities.
- Collaborated with NUS IT teams for secure solution implementation, adhering to confidentiality under NDA.
Cybersecurity Intern
GIC
May-Aug 2025 • 4 months
- Created an internal chatbot using agentic RAG architecture, reducing average response time from ~1 hour to ~20 seconds.
- Developed automation scripts to replace manual workflows, reducing SLA from 5 days to ~2 minutes for key cloud security processes.
- Integrated APIs with CI/CD pipelines to streamline deployment and embed security checks.
2024
Undergraduate Teaching Assistant
National University of Singapore (NUS)
Aug-Dec 2024 • 3 months
- Taught CS2107 Introduction to Information Security
- Designed and developed hands-on challenges in cryptography, web security, digital forensics, and reverse engineering.
- Enhanced student engagement and learning outcomes through interactive sessions.
Cyber AI Analytics Intern
Home Team Science and Technology Agency (HTX)
May-Aug 2024 • 4 months
- Performed vulnerability discovery across multiple applications, uncovering potential security risks.
- Configured and deployed an ELK stack for data analysis and visualization.
- Utilized Burp Suite for in-depth API analysis, identifying hidden functionalities and vulnerabilities.
2023
Cybersecurity Specialist
Cyber Security Agency of Singapore (CSA)
Aug 2021 - Aug 2023 • 2 years
- Acquired forensic evidence (system artefacts, system logs) to support root-cause analysis during cyber incidents.
- Performed digital forensics on files, network activity, system logs, and memory captures to determine attack vectors.
- Liaised with CII providers and victim entities to coordinate incident response and mitigation.
ls -la ~/certs
OSED (OffSec Exploit Developer)
Enrolled • Expected 2025 ¯\_(ツ)_/¯
GREM (GIAC Reverse Engineering Malware)
Nov 2024 - Nov 2028
OSWE (OffSec Web Expert)
Issued Jul 2024
GCFA (GIAC Certified Forensic Analyst)
Jun 2024 - Jun 2028
CEH (Certified Ethical Hacker)
Apr 2024 - Apr 2027
OSCP (OffSec Certified Professional)
Issued Mar 2024
ls -la ~/projects
tools.gaanesh.com
2025 · Actively maintained
Building a growing suite of self-hosted utilities, starting with PDF and image operations, with more tooling on the way. All done via your browser, no uploads for privacy!
IR Dojo - CTF Training For Everyone
Dec 2021 - Mar 2022
Created a CTF focusing on Digital Forensics and Malware Analysis. Won the MCI Idea! Award.
BuildOn Singapore Hackathon
Aug 2020
Developed a bed sorting algorithm using React and AWS services, reaching the semi-finals.
Live Smart Singapore Hackathon (ACRA)
Jul 2020 - Aug 2020
Created an automated form processing flow with React and AWS, securing a Top 5 finalist position.
ls -la ~/Education
National University of Singapore (NUS)
Bachelor of Computing in Information Security (Hons*)
2023 - 2025
Singapore Polytechnic
Diploma in Aerospace Electronics && Diploma+ in Aviation Management
2017 - 2020
Testimonials
Lee Jia Quan (Benny)
Computer Science undergrad at NUS
"Working alongside Gaanesh has been a truly inspiring experience. His enthusiasm and curiosity have consistently fueled my own motivation to tackle new and challenging projects. Gaanesh is always eager to engage in meaningful discussions, particularly about trending advancements in cybertech and their implications on our work, which adds depth and relevance to our collaborations. What stands out most about Gaanesh is his unwavering dedication and goal-oriented mindset. When he commits to a project, he ensures that it is not only completed on time but also meets his high personal standards. This level of diligence makes collaborating with him an exceptional experience. His openness to exchanging ideas and his focus on achieving results within the set timeline create a productive and enjoyable working environment."
Worked together in NUS
04 Jan 2025
Guo GangQuan
Information Security undergrad at NUS
"Gaanesh is an exceptional team player who consistently motivates the team to exceed their potential. His strong communication skills and ability to collaborate effectively with diverse individuals make him a valuable asset in any group setting. With a solid academic background and a keen interest in cybersecurity, Gaanesh brings both knowledge and passion to his work. His problem-solving skills are remarkable, as he is quick to suggest alternative solutions when plans don't unfold as expected, ensuring progress and success in challenging situations."
Worked together in NUS
04 Jan 2025