I am Robiul Awal Fagun, a cybersecurity professional specializing in Offensive Security, Penetration Testing, Red Teaming, and Vulnerability Research.
I actively contribute to security platforms including HackerOne, Bugcrowd, Intigriti, and serve as a Strike Force Member at Yogosha.
I am passionate about identifying vulnerabilities, improving system security, and educating the community through CTF competitions and workshops.
- HackTheBox 2025 — 1st in Bangladesh
- TryHackMe 2024 — 2nd in Bangladesh
- Hacker101 CTF — 7th Globally
- BSC ICT Fest'25 CTF — Corporate Champion
- BTRC Hackathon 2025 — 2nd Runner-Up
- FlagHunt 2023 — 2nd Runner-Up
- National Skills Competition 2024 — 2nd Runner-Up
- Flag Fest 2024 — 2nd Runner-Up
- Spooky CTF 2022 — Champion
Hosted CTF events: LeetCon, DIUCSC-01 CTF, CCAF CTF 2024, EWU CTF
- Penetration Testing & Vulnerability Assessment
- Red Team Operations & Threat Simulation
- Web Application Security
- Network Security & Exploitation
- Active Directory & Cloud Security
- API Security
- Linux & Windows Hardening
- Exploit Development & Security Research
- CRTE, CRTA, CRTeamer, AD-RTS, MCRTA
- CAPenX, CAPen, CAP, CNPen, CNSP
- CCSP-AWS
- ACP, CASA
- ISO/IEC 27001:2022 Lead Auditor
- Burp Suite Certified Practitioner (BSCP)
- Penetration Tester Level 1 (PT1)
- Red Team Engagement - Full-scope adversary emulation with PoC and remediation actions.
- VA/PT Engagement - Automated & manual testing across web, API, network, cloud; prioritized findings with exploit evidence and remediation steps.
- Source Code Review - Manual reviews for backend/frontend; annotated vuln snippets, severity, patch examples, and secure-coding checklist.
- Network Configuration Review - Comprehensive review of network architectures, configurations, and security controls to ensure reliability, compliance, and hardened deployment standards.
- Anti-CTFd Solution - Engineered containerized environments for CTF competitions, providing unique flags per team to prevent sharing and preserve challenge integrity.
- CTFd-Discord Integration - Developed a CTFd plugin for Discord that automates user verification, syncs nicknames with CTFd usernames, and assigns roles.
“Breaking systems to build stronger ones.”