Charles F. Hamilton

Director Offensive Security / Directeur Sécurité Offensive

Chambly, Quebec, Canada

About

I am a cybersecurity professional with extensive experience in offensive security, vulnerability research, and adversary simulation. Over the years, I’ve worked with a wide range of technologies, from traditional enterprise environments to modern cloud infrastructure and embedded systems. My work is rooted in a deep understanding of systems internals, threat actor behaviors, and hands-on technical execution. I specialize in bridging the gap between Red, Blue, and Purple teams by developing tailored tools and methodologies to simulate real-world attacks and improve organizational defenses. Core Expertise - Web Application, External, and Internal Penetration Testing - Reverse Engineering and Malware Analysis - Red Teaming & Purple Teaming Exercises - Secure Code Reviews and Audits - Custom Offensive Tool Development - IoT, SCADA & Embedded Systems Security Testing - Traditional Network and Infrastructure Pentesting - Cloud Security Assessments (AWS, Azure, GCP) - Active Directory Security and Privilege Escalation Path Mapping Founder of RingZer0 Team CTF, an online platform offering advanced Capture The Flag (CTF) challenges focused on real-world offensive security skills, including binary exploitation, reverse engineering, and web security. The platform is widely used by cybersecurity professionals and enthusiasts for skill development. - https://ringzer0ctf.com Founder of an online training platform dedicated to red teaming, and tooling development. - https://mr.un1k0d3r.online - https://truecyber.world GitHub Contributions I actively share tools, research, and proof-of-concept exploits with the security community. Explore my work: - https://github.com/Mr-Un1k0d3r Certifications - OSCP: Offensive Security Certified Professional - OSCE: Offensive Security Certified Expert - SLAE64: Linux Assembly Expert (64-bit) - GREM: GIAC Reverse Engineering Malware

Experience

  • Director at CYPFER
    Jan 2025 - Present · 1 yr 7 mos

  • KPMG Canada (3 yrs 9 mos)
    • Executive Director Offensive Security / Directeur Exécutif Sécurité Offensive
      Sep 2023 - Jan 2025 · 1 yr 5 mos

    • Manager Offensive Security / Directeur Securité Offensive
      May 2021 - Sep 2023 · 2 yrs 5 mos

  • Director of Cyber Security at KPMG-Egyde Cybersecurity
    May 2021 - Sep 2023 · 2 yrs 5 mos

  • Principal Consultant at Trustwave
    Mar 2019 - May 2021 · 2 yrs 3 mos

  • Senior Consultant at Mandiant, a FireEye Inc. Company
    Aug 2015 - Mar 2019 · 3 yrs 8 mos