AJ Dumanhug is a cybersecurity professional with more than ten years of hands-on experience, currently serving as Head of Offensive Security at GCash, one of Southeast Asia's leading fintech platforms.

He co-founded a cybersecurity startup, becoming one of the youngest co-founders in the industry with well-known customers. His offensive security background spans penetration testing, red teaming, and bug bounty hunting, including an invite to a private live hacking event hosted by Facebook and Google in Singapore.

He has taught cybersecurity at the University of the Philippines SITF, De La Salle - College of St. Benilde SPaCE, and Adamson University, and served as a Highly Technical Consultant for the National Privacy Commission.

AJ is a member of hackstreetboys, a well-recognized team in the Philippines that competes in local and international Capture the Flag (CTF) events. With the group, one of their most notable achievements was securing third place at the DEFCON CTF under the Red Team Village. Beyond competing, AJ also helps organize the ROOTCON CTF competitions, supporting the local security community.

He holds 17 cybersecurity certifications spanning offensive security, red teaming, digital forensics, and data privacy, including CISSP, CIPM, CPTS, OSEP, OSWE, OSCP, OSWP, CRTO, CRTE, CRTP, eMAPT, eCIR, eCTHP, eCDFP, PNPT, ECSA, and CEH.