Reju Kole is a cybersecurity professional, security researcher, and instructor with more than 7 years of hands-on experience in ethical hacking, penetration testing, vulnerability research, and red teaming.

His experience spans multiple areas of cybersecurity, including web application security, Active Directory, network exploitation, cloud security, blockchain security, and ICS/OT environments. His approach is strongly practical, built through real-world security research, hands-on testing, and continuous work in offensive security.

As a security researcher, Reju has discovered and contributed to multiple publicly documented vulnerabilities, including CVE-2026-65693, CVE-2026-63725, and CVE-2026-63722. His research includes High- and Critical-severity vulnerabilities, with CVSS scores reaching 9.8 (Critical) for CVE-2026-63722 and 8.6 (High) for CVE-2026-65693 and CVE-2026-63725.

He holds several industry-recognized certifications, including BSCP, eCPPT, eWPT, CRTA, eJPT, ACP, CASA, ISO/IEC 27001:2022 Lead Auditor, and ISO/IEC 27701:2025 Lead Auditor. He has also completed multiple Hack The Box Pro Labs, gaining practical experience in advanced attack simulations, penetration testing, and realistic enterprise environments.

As an instructor, Reju focuses on making cybersecurity practical, understandable, and relevant to real-world situations. Rather than relying only on theory, he demonstrates how attacks work, why vulnerabilities occur, how security professionals identify and exploit weaknesses, and how to approach security assessments from an offensive-security perspective.

Whether you are beginning your cybersecurity journey or looking to strengthen your existing skills, Reju’s courses are designed to help you build strong fundamentals, develop practical hands-on abilities, and gain the mindset and confidence needed to approach cybersecurity like a real security professional.