Hacker | Security Researcher
Offensive Security Researcher specializing in critical infrastructure protection and vulnerability analysis.
Clients I've Worked With
Revealing the Invisible
Security Landscape
I am Nathaneal Meththananda, an Offensive Security Researcher dedicated to uncovering vulnerabilities before they can be exploited. My methodology combines rigorous manual analysis with advanced automated testing to stress-test critical infrastructure.
Unlike traditional scanners, I simulate sophisticated adversary behaviors to identify logic flaws and complex attack chains that automated tools miss. My work provides actionable intelligence, allowing organizations to harden their defenses against real-world threats.
Core Competencies
- Advanced Penetration Testing
- Vulnerability Research & Exploitation
- Critical Infrastructure Security
- Secure Architecture Review
- Red Teaming Operations
- Source Code Analysis
AI Security & LLM Teaming
Specialized in adversarial attacks on Large Language Models, including prompt injection, jailbreaking strategies, and defense evasion techniques.
Automated Exploit Dev
Custom tooling development for zero-day discovery and automated vulnerability chaining in complex distributed systems and neural networks.
Subject Matter Expert
Acknowledgement
Recognized by HackTheBox for exceptional contribution and deep technical understanding in cybersecurity domains. This designation reflects a mastery of complex penetration testing methodologies and a commitment to advancing the offensive security community.
Defensive & Offensive
Security Solutions
Advanced Penetration Testing
Simulating sophisticated adversaries to expose critical vulnerabilities across your digital perimeter.
- Red Teaming Operations
- Web & Mobile App Security
- API Exploitation
Strategic Consulting
Designing resilient security architectures and governance frameworks aligned with business objectives.
- Zero Trust Architecture
- Threat Modeling
- Security Roadmap
Cloud Security Assurance
Hardening cloud-native environments and effectively managing configuration drift.
- AWS/Azure/GCP Hardening
- Kubernetes Security
- IaC Review
Vulnerability Management
Continuous identification and remediation of security weaknesses across your entire asset inventory.
- Risk-Based Prioritization
- Manual Verification
- Patch Management Strategy
Incident Response
Rapid containment and forensic analysis to minimize impact and recover from security breaches.
- Digital Forensics
- Malware Analysis
- Breach Remediation
Compliance & Audit
Navigating complex regulatory landscapes to ensure alignment with industry standards.
- ISO 27001
- SOC 2 Preparation
- GDPR/HIPAA Compliance
Highlighting Projects
Successful security engagements and real-world impact
Enterprise Windows Servers and Firewalls Security Audit
Conducted comprehensive security audit on 22+ Windows Servers as well as 10 Firewalls for a leading Sri Lankan telecommunication organization,
U.S Government - Houston Waterplant Penetration Test
Performed an extensive penetration test on the Houston Waterplan website with finding 2 Critical Vulnerabilities.
Rocell Bathware - Web Application Security Assessment
Conducted a complete pentest on the target where I fully exploited the internal database of the given target (UART).
Ransomware Incident Response for Ruhunu Motors (PVT)Ltd
Led incident response team to contain and recover from ransomware attack, minimizing business disruption.
Mercedes Benz - Web Application Security Assessment
With the given highly sensitive environment, I was able to identify a Error based Infor-Disclosure vulnerability in the application.
Allianz - Firewall Audit and Hardening
Conducted a thorough audit and hardening of Allianz's firewall infrastructure to enhance network security and compliance.
Technical Expertise
Demonstrating mastery across offensive security domains and engineering disciplines.
Offensive Operations
Infrastructure & Cloud
Analysis & Research
Code & Automation
Professional Certifications
Validated expertise across offensive security, threat intelligence, and advanced penetration testing domains.
CRTE
Certfied Red Team Expert
Altered Security
CEH
Certified Ethical Hacker
EC-Council
ArcX - CTI Practitioner
Cyber Threat Intelligence Practitioner
ArcX
APTLabs
HackTheBox - APTLabs Pro Lab
HackTheBox
AWS Security
AWS Certified Security - Specialty
Amazon Web Services
VHL Labs
Virtual Hacking Labs
VHL
Additional Research and Development I Conduct
Malware Development
Endpoint Detection Bypass
AI Red Teaming
Adversarial AI Security
AI Application Development
Machine Learning Engineering
Let's Collaborate
Available for security consulting, penetration testing engagements, and research collaborations. Connect with me through any of the following channels.
Response Time
I typically respond to inquiries within 24-48 hours. For urgent security matters, please indicate priority in your message subject line.