AJ Dumanhug is a cybersecurity professional with more than eight years of hands-on experience in offensive security.

He has taught cybersecurity courses at the University of the Philippines SITF, De La Salle - College of St. Benilde SPaCE, and Adamson University CPDD. He also served as a Highly Technical Consultant for the National Privacy Commission, where he provided expertise on security and privacy matters.

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 community of security enthusiasts.

He holds multiple cybersecurity certifications, including CISSP, OSEP, OSWE, OSCP, OSWP, CRTO, CRTE, CRTP, eMAPT, eCIR, eCTHP, eCDFP, PNPT, ECSA, and CEH.