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👋 Hey, I’m Daud Al Adumy

Cybersecurity Engineer · AppSec Specialist · Bug Bounty Researcher I build secure systems, deliver red team strategies, and love to share knowledge in cybersecurity engineering. Always open for research, talks, or collaboration.

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Certifications

CEH ECIH EHE CAP CCSP-AWS CNSP ISC2 CC BTF JNCIA

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About This Journal

“This is a personal project that compiles all the knowledge I have gained throughout my hacking journey, and therefore contains contents from all sources. I will try my best to expand the repertoire in the future as I grow with you all together.”
I strive to give full credits to the original authors, while explaining the concepts in my own words. Please do not hesitate to reach out to me if you find anything inaccurate, inappropriate or without proper credit. The project is still in development, and you can expect more refined content over time.

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What’s Inside

Use the search bar (Ctrl+K) to quickly find any command, technique, or topic across the entire journal.

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Background

I’m a cybersecurity practitioner combining technical depth with real-world experience in:
  • Penetration Testing & Red Teaming - web apps, APIs, mobile, network & infrastructure
  • Bug Bounty Hunting - active researcher on HackerOne, Bugcrowd, Intigriti since 2019, finding critical issues like IDOR, XSS, auth bypass & logic flaws
  • Security Engineering - currently at Fintech Company in Indonesia, managing pentest and bugbounty programs also create some automation pipelines
  • Security Education - content creator at @barengsinau (YouTube & TikTok), simplifying security for everyone

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Catch Me

This journal is continuously updated as I learn and grow. Some sections may be a work-in-progress, check back regularly for new content!